Dear Readers,

As you may have seen elsewhere, in mid February my wife and I suffered the loss of our home in a fire, in the hills of central Massachusetts. The good news is that we got out safely and had no animals in our care at the time. The fire crews were able to contain the fire from spreading, in what turned into a 3-alarm, 5-hour-long ordeal in subzero temperatures; they did amazing work, and no one was injured. The bad news is that all of my physical historical materials and research of 30 years have gone up in smoke. As a result I have decided to suspend this blog for the time being. It will remain online as a resource for those interested in the history of glass and glassmaking in the seventeenth century and beyond. I do intend to resume writing when I can, but for now my time and energy are required in getting us back on our feet.

Friends are providing temporary shelter for us nearby and our intention is to rebuild as soon as possible. To those who have reached out with a steady hand, to those who have opened their wallets, and offered advice in our time of need, we thank you from the bottom of our hearts. In what are already difficult times for all of us, you have made a huge difference in our lives.

Paul Engle
6 March, 2021

Picture Credits 2016

December 2016
Supplemental illustration (31 December 2016): 16th century miniature of Aleppo (Halep) , Syria, by Matrakçi Nasuh (cir.1480-1564). http://ankaraolgunlasma.meb.k12.tr/tema/icerikler/matrakci-nasuh_1564182.html

Neri's Aleppo Connection (30 December 2016):
1) Drummond, Alexander (1754), Travels through different cities of Germany, Italy, Greece, and several parts of Asia, as far as the banks of the Euphrates (London: Printed by W. Strahan for the author, 1754) OCLC 1319396, http://openlibrary.org/books/OL6953903M/Travels_through_different_cities_of_Germany_Italy_Greece_and_several_parts_of_Asia_as_far_as_the_ban Artist unknown, Image courtesy of Wikimedia: http://commons.wikimedia.org/wiki/File:1754_Aleppo_Drummond.png

 2) Aleppo 2013 , in Karm al Jabal. This neighborhood is next to Al Bab and has been under siege for 6 months, 4 March 2013. Credit: Basma. Photo courtesy of Foreign and Commonwealth Office via Wikimedia. https://commons.wikimedia.org/wiki/File:Syria-_two_years_of_tragedy_(8642756918).jpg

Supplemental Twitter illustration (29 December 2016): Mater Dolorosa, Titian,  Museo del Prado, Madrid, Spain. http://xlart.com/en/lienzos/546-mug-sorolla-ninos-en-la-playa.html

Ultramarine Blue (28 December 2016):
Photo: Krén, Emil and Daniel Marx, Web Gallery of Art. Frescoes in the Cappella Scrovegni , Padua by Giotto, 1306, via http://drawingatduke.blogspot.com/2012/10/giotto-di-bondone.html

Supplemental Twitter illustration (27 December 2016): A coach of the middle of the seventeenth century: from an engraving by John Dunstall.A Student's History of England, v. 2 (of 3),1509-1689, by Samuel Rawson Gardiner http://www.gutenberg.org/files/40192/40192-h/40192-h.htm

Neri's Travels (26 December 2016):
“Roma,” Antonio Neri, from Tesoro del Mondo (Neri 1598–1600), Courtesy of University of Glasgow Library, Special Collections.

Happy Holidays (25 December 2016): Artist Janice Miltenberger  with her glass topiary "Wisdom's Invocation" Photo by Lynn Thompson, ©Janis Miltenberger 2016

Supplemental Twitter illustration (24 December 2016): Unknown artist; the author of the MS is Abraham Abulafia. - The Vatican Library, Vat. ebr. 597 leaf 113 recto. An illuminated page from "Light of the Intellect" (1285) courtesy wikimedia commons  https://en.wikipedia.org/wiki/Kabbalah#/media/File:Abraham_abulafia.jpg Also see https://en.wikipedia.org/wiki/Kabbalah

The Kabbalah (23 December 2016):
Kabbalistic Sephiroth Tree, from Portae Lucis, Paulus Ricius (Trans. of “Shaare ora” by Joseph Gikatilla) Augsburg, 1516.

Supplemental Twitter illustration (22 December 2016): A modern take on traditional trade beads by American flamework artist  Harold Williams Cooney. Photo by artist. @AmericanBeads

Glass Beads (21 December 2016):
String of Six-layer glass chevron trade beads from Venice, popular as trade currency in the 15th 16th and 17th century (photo attr. unknown).

Supplemental Twitter illustration (20 December 2016): 19th century  distillation apparatus used to produce ammonia from sal ammoniac. Cooley's Cyclopædia, 6th Ed., Vol. I, by Arnold James Cooley. https://www.mirrorservice.org/sites/gutenberg.org/3/9/7/3/39733/39733-h/39733-h.htm

Sal Ammoniac (19 December 2016):
Ammoniac (skeletal crystals to 10 sm). Uroch. Kukhi-Malik, Fan-yagnobskoe coal mine, near Ravat, Tadjikistan, Middle Asia, CIS, Yagnob. (c) A. A. Evseev, photo courtesy of http://www.jewellery.org.ua/stones-katalog-engl/mineral-nashatir.htm

Wkly blog recap (18 December 2016): Conciatore, The Life and Times of 17th Century Glass Maker Antonio Neri, by Paul Engle, pp. 394, ISBN: 978-0974352954 Winner IPPY gold medal.

Supplemental Twitter illustration (17 December 2016): Glass items found by archaeologists in the baptistery at  SS. Giovanni e Reparata in Lucca, Italy. Evidence suggests some may have been originally  purchased from the Pisa shop of Giovanbattista Guerrazzi. http://archeologiamedievale.unisi.it/SitoCNR/Vetro/Produzione/Prod4b2.html

Rise and Fall (16 December 2016):
“Merry Company,” 1623. Gerard van Honthorst (1590–1656),
Courtesy of Staatsgalerie im Neuen Schloss, Schleißheim, via Wikimedia commons. http://en.wikipedia.org/wiki/File:Honthorst,_Gerard_van_-_Merry_Company_-_1623.jpg

Supplemental Twitter illustration (15 December 2016): Diderot’s Encyclopédie, the production of glass artificial pearls in 18th century France.  http://www.bigbeadlittlebead.com/guides_and_information/history_of_faux_pearls.php

Faux Pearls (14 December 2016):
Johannes Vermeer, "Girl with a pearl earring" (1665-6). Courtesy of Royal Picture Gallery Mauritshuis, via Wikipedia: http://en.wikipedia.org/wiki/File:Johannes_Vermeer_(1632-1675)_-_The_Girl_With_The_Pearl_Earring_(1665).jpg

Supplemental Twitter illustration (13 December 2016): The library of the University of Leiden (1610), where Christoph Plantin worked from 1583 to 1585. Picture courtesy of Frédéric Barbier http://histoire-du-livre.blogspot.com/2012_04_01_archive.html (28 Avril 2012). University Library Leiden in 1610 from Woudanus in ''Stedeboeck der Nederlanden'', Amsterdam: Willem Blaeu, 1649.

Neri the Scholar (12 December 2015):
Francesco Bartolozzi, Biblioteca Medicea Laurenziana, fine XVIII sec.
http://babilonia61.com/wp-content/uploads/2012/10/Francesco-Bartolozzi-Biblioteca-Medicea-Laurenziana-fine-XVIII-sec.--1024x619.jpg

Wkly blog recap (11 December 2016): Conciatore, The Life and Times of 17th Century Glass Maker Antonio Neri, by Paul Engle, pp. 394, ISBN: 978-0974352954 Winner IPPY gold medal.

Supplemental Twitter illustration (10 December 2016): Portrait of Torbern Olof Bergman (1735-1784), Swedish, by Ulrika Pasch. Courtesy of https://commons.wikimedia.org/wiki/File:Torbern_Olof_Bergman.jpg

Fall from Grace (9 December 2016)
Felice Fontana portrait, attribution unknown (to me).
http://www.internetculturale.it/opencms/opencms/it/archivionovita/2005/novita_19.html
http://www.imss.fi.it/news/ifelicefontana.html
Here for a photo of the Fontana bust on display at La Specola: http://wellcomeimages.org/indexplus/result.html?*sform=wellcome-images&_IXACTION_=query&%24%3Dtoday=&_IXFIRST_=1&%3Did_ref=M0018822&_IXSPFX_=templates/t&_IXFPFX_=templates/t&_IXMAXHITS_=1

Supplemental Twitter illustration (8 December 2016): Jacob van Loo, A 17th cent. Dutch Glass Factory, 163 x 215 cm, Oil on canvas. Statens Museum for Kunst, Copenhagen https://www.pubhist.com/w3934

Roasting the Frit (7 December 2016):
Denis Diderot, Jean le Rond d'Alembert eds., L'Encyclopédie, Vol. 10 (1772), "Glass Making,” Raking Out Baked Frit (Verrerie – Verrerie en bois ou petite verrerie à pivette) fig. 15.

Supplemental Twitter illustration (6 December 2016):  Domenico Remps (1620–1699)
Cabinet of Curiosities, 1690s, oil on canvas, Museo dell'Opificio delle Pietre Dure, Florence
 https://commons.wikimedia.org/wiki/File:Cabinet_of_Curiosities_1690s_Domenico_Remps.jpg

Francesco's Studiolo (5 December 2016):
The studiolo of Francesco de' Medici, Palazzo Vecchio, Florence. Photo courtesy of http://static.digischool.nl/ckv2/hof/Hofcultuur3/studiolo.htm

Wkly blog recap (4 December 2016): Conciatore, The Life and Times of 17th Century Glass Maker Antonio Neri, by Paul Engle, pp. 394, ISBN: 978-0974352954 Winner IPPY gold medal.

Supplemental Twitter illustration (3 December 2016): Miniature of a North Italian apothecary's shop in a Hebrew edition of the Canon Medicinae by Ibn Sina/Avicenna, c. 1450-75, Bibliotheca Universitaria, Bologna, Italy, MS 2197, fol. 492. http://globalthingsproject.squarespace.com/updates/2014/5/19/a-syrian-apothecary-jar-in-the-three-marys-at-the-tomb-by-jan-van-eyck

Royal Apothecary (2 December 2016):
Fresco, early 16th century speziale, Castello di  Issogne, lower Aosta Valley, Italy.Courtesy of Istituto Comprensivo Edmondo de Amicis - Marcallo con Casone. http://www.icmarcallo.it/mesero/scuola_media_di_mesero/attivita_opzionali/issogne/1.castello_bianconero.html

Supplemental Twitter illustration (1 December 2015):The former church of San Jacopo in Campo Corbolini in Florence, administered by the Knights of Malta (aka of Saint John) http://firenzeneidettagli.blogspot.com/2013/10/i-templari-di-san-jacopo-in-campo.html

November 2016
The Knights (30 November 2016):
“Fra Antonio Martelli, Knight Grand Cross of the Order of Malta,” from about 1608. (Museum of Fine Arts, Boston) Photo courtesy of http://artery.wbur.org/2014/04/18/mfa-caravaggio

Veins of the Earth (28, 29 November 2016): Antonio Neri, "Libro intitulato Il tesoro del mondo di Pietre Antonio Neri" (MS Ferguson 67, GB 0247, Glasgow University Library, Special Collections, 1598-1600) f. 5r, 6r.

Wkly blog recap (27 November 2016): Conciatore, The Life and Times of 17th Century Glass Maker Antonio Neri, by Paul Engle, pp. 394, ISBN: 978-0974352954 Winner IPPY gold medal.

Supplemental Twitter illustration (26 November 2016): Photo of Sir Thomas Phillips, ca. 1860. from frontispiece of "Bibliotheca Phillippica: manuscripts on vellum and paper from the 9th to the 18th centuries from the celebrated collection formed by Sir Thomas Phillipps : the final selection." , New York : H.P. Kraus, c1979.  http://www.themorgan.org/collection/crusader-bible/provenance

Bibliomaniac (25 November 2016):
Broadway Tower, Worcestershire. The home of Phillipps' Middle Hill Press. Photo W. Lloyd MacKenzie, via Flickr @ http://www.flickr.com/photos/saffron_blaze/ via http://commons.wikimedia.org/wiki/File:Broadway_Tower_2012.jpg

Supplemental Twitter illustration (24 December 2016): Carolyn Baum, Eternal Bloom, 2013. Flameworked soft glass, wire, fieldstone. H 12, W 12, D 10. https://glassquarterly.wordpress.com/2013/07/05/opening-true-to-life-glass-exhibition-inspired-by-blaschka-flowers-debuts-at-pittsburgh-glass-center/

Yellow glass (23 November 2016):
Created in 1995, by the studio of Dale Chihuly, this chandelier is made of 900 pieces of hand-blown glass. Weighing more than 1,000 pounds and measuring nine feet long and six feet wide, it contains 500 feet of yellow glass neon tubing. It is displayed at the Columbus, Indiana Visitors Center. Photo courtesy of the Center, http://www.kid-at-art.com/htdoc/cglass.html

Supplemental Twitter illustration (22 November 2016): Lead-glazed pottery drinking cup (skyphos) Roman, about 50 BC - AD 50 From Tarsus, south-eastern modern Turkey  Courtesy of British Museum http://www.britishmuseum.org/research/collection_online/collection_object_details/collection_image_gallery.aspx?partid=1&assetid=250801001&objectid=466043

Lead Crystal (21 November 2016):
George Ravenscroft, Roemer type drinking glass c. 1677. Victoria and Albert Museum Collection. C.530-1936 (British Galleries, room 56d, case 13). http://collections.vam.ac.uk/item/O5164/drinking-glass-ravenscroft-george/

Wkly blog recap (20 November 2016): Conciatore, The Life and Times of 17th Century Glass Maker Antonio Neri, by Paul Engle, pp. 394, ISBN: 978-0974352954 Winner IPPY gold medal.

Women in Alchemy: ( 18, 19 November 2016):
Antonio Neri, "Libro intitulato Il tesoro del mondo di Pietre Antonio Neri" (MS Ferguson 67, GB 0247, Glasgow University Library, Special Collections, 1598-1600) f. 25r, 35r, 37r.

Supplemental Twitter illustration (17 March 2016): A facon de venise wine glass, collection of  Elisabeth & Theo Zandbergen; a miraculous survivor of the 17th-18th century.  https://ancientglass.wordpress.com/2016/02/16/a-pair-of-facon-de-venise-wine-glasses/

Sara Vincx (16 November 2016):
Detail from: Roses and an iris in a glass vase, crabs and prawns on a pewter platter, a Facon-de-Venise wineglass, a stoneware ewer, a bunch of grapes. By Alexander Adriaenssen b. 1587, Antwerp, d. 1661, Antwerp

Supplemental Twitter illustration (15 November 2016): The Beguines' hospital of Malines in Mechelen, Belgium in the 19th century. Source unknown.

The Béguines of Mechelen (14 November 2016):
A Béguine of Antwerp, from Pierre Hélyot, L'Histoire des ordres monastiques… 1719 (v.8) Courtesy of Google Books: http://books.google.com/books?id=9DQGAAAAQAAJ

Wkly blog recap (13 November 2016): Conciatore, The Life and Times of 17th Century Glass Maker Antonio Neri, by Paul Engle, pp. 394, ISBN: 978-0974352954 Winner IPPY gold medal.

Supplemental Twitter illustration (12 November 2016): Sandro Botticelli, Primavera (1498) Courtesy of Uffizi Gallery, Florence, via Wikimedia Commons http://commons.wikimedia.org/wiki/File:Botticelli-primavera.jpg (detail - rightmost of the three graces)

Caterina Sforza (11 November 2016): Portrait of Caterina Sforza, by Lorenzo di Credi (c.1463-1509)
Now in the Museum of Forlì (Pinacoteca Civica di Forlì, Italy)
Photo courtesy of: http://www.asn-ibk.ac.at/bildung/faecher/geschichte/maike/monalisa/genealogy/073.htm
Via Wikimedia Commons http://commons.wikimedia.org/wiki/File:Caterina_Sforza.jpg

Sandro Botticelli, Primavera (1498) Courtesy of Uffizi Gallery, Florence, via Wikimedia Commons http://commons.wikimedia.org/wiki/File:Botticelli-primavera.jpg (detail - rightmost of the three graces)

Supplemental Twitter illustration (10 November 2016):  Paracelsus, 1935. Franz Görtitz, Brukenthal National Museum, Sibiu, Romania. The painting shows the famous alchemist and physician Paracelsus holding a retort in his hands and standing in front of a furnace on which is placed a glass balloon  http://hekint.org/index.php?option=com_content&view=article&id=1286&catid=62&Itemid=624

The Paracelsans (9 November 2016):
Aureolus Philipp Theophra Paracels, courtesy of ‘Images from the History of Medicine’, U.S. National Library of Medicine (NML). Portrait no. 5197.15, Record UI: 101433870, Image ID:186083
http://ihm.nlm.nih.gov/luna/servlet/detail/NLMNLM~1~1~101433870~186083:Aureolus-Philipp-Theophra-Paracels?sort=Title%2CSubject_MeSH_Term%2CCreator_Person%2CCreator_Organization&qvq=w4s:/what/Paracelsus,%201493-1541;sort:Title%2CSubject_MeSH_Term%2CCreator_Person%2CCreator_Organization;lc:NLMNLM~1~1&mi=0&trs=25

Supplemental Twitter illustration (8 November 2016): Manganese Amberina Footed Compote Bowl Candy Dish http://www.ebay.com/itm/Viking-Manganese-Amberina-Footed-Compote-Bowl-Candy-Dish-/171995205645?hash=item280bb6900d

Neri's Other Rubino (7 November 2016): Photo by Eric Hunt - Rhodochrosite, from the Sweet Home Mine, Colorado, private collection. Courtesy of Wikipedia. http://en.wikipedia.org/wiki/Rhodochrosite#mediaviewer/File:The_Searchlight_Rhodochrosite_Crystal.jpg

Wkly blog recap (6 November 2016): Conciatore, The Life and Times of 17th Century Glass Maker Antonio Neri, by Paul Engle, pp. 394, ISBN: 978-0974352954 Winner IPPY gold medal.

Supplemental Twitter illustration (5 November 2016): "Santa Maria Maggiore, from the Buonsignori map 1594" by Sailko - Own work. Licensed under CC BY 2.5 via Commons - https://it.wikipedia.org/wiki/Chiesa_di_Santa_Maria_Maggiore_(Firenze)#/media/File:Pianta_del_buonsignori,_dettaglio_095_santa_maria_maggiore.jpg

Benedetto Vanda  (4 November 2016):
Veduta della Badia Fiesolana - Gaspar Van Wittel detto Vanvitelli (1652/3-1736) Photo courtesy of Fra Coraggio, Occhio Fantastico Photostream, Flickr. https://www.flickr.com/photos/fracoraggio/7706448508/

Supplemental Twitter illustration (3 Nov.2015): Titian used glazes of red lake to create the vivid crimson of the robes in "The Vendramin Family Venerating a Relic of the True Cross", completed 1550-60 (detail). https://en.wikipedia.org/wiki/Lake_pigment#/media/File:Titian_-_The_Vendramin_Family_Venerating_a_Relic_of_the_True_Cross_(detail)_-_WGA22811.jpg

Lake of Flowers (2 November 2016):
The Miracle of the immobility of Santa Lucia, 1596/7, by Leandro Bassano (1557–1622).
S Giorgio Maggiore Venice, 1st Altar from the entrance left. Photo credit: Basilica S Giorgio Maggiore Edizione della Basilica 2000 P.26, courtesy of Wikimedia commons. http://commons.wikimedia.org/wiki/File:Bassano,Leandro_Martyr_S_Lucia.jpg

Supplemental Twitter illustration (1 November 2016): Ribbed vessel, chalcedony glass, seventeenth century, 20 cm. Collection of the  Museo del Monastero di Santa Giulia, Brescia. Courtesy of Fondazione Marilena Ferrari. http://www.atlantedellarteitaliana.it/artwork-1479.html

October 2016
Witch's Brew of Glass (31 October 2016):
Glass pumpkin evocative of chalcedony glass. Photo courtesy of  Smithsonian Museum store. http://www.smithsonianstore.com/art-glass-pumpkin-80481.html?&search=pumpkin

Ribbed vessel, chalcedony glass, seventeenth century, 20 cm.
Collection of the  Museo del Monastero di Santa Giulia, Brescia
Courtesy of Fondazione Marilena Ferrari. http://www.atlantedellarteitaliana.it/artwork-1479.html

Supplemental Twitter illustration (29 October 2016): Galileo Galilei, objective lens, Padua, late 1609
Glass, 58 mm, Later mounted in a commemorative frame (1677) , Museo Galileo, Florence, inv.2429 http://www.astronomy2009.org/resources/multimedia/images/detail/galileo_03/

Galileo and Glass (28 October 2016):
Justus Sustermans (1597-1681), portrait of Galileo Galilei, 1636 (detail). National Maritime Museum, Greenwich, London, Courtesy of Wikimedia Commons. http://commons.wikimedia.org/wiki/File:Justus_Sustermans_-_Portrait_of_Galileo_Galilei,_1636.jpg

Supplemental Twitter illustration: (27 October 2016): Glass mosaic ceiling of San Giovanni Baptistery, florence Italy. Image courtesy of  http://alfa-img.com/show/florence-baptistery-mosaics.html

San Giovanni (26 October 2016):
1) Giacomo Brogi (1822-1881), "Florence - Church of San Giovani, the Baptistry". Catalogue # 3022. Courtesy of Wikimedia Commons.
http://commons.wikimedia.org/wiki/File:Brogi,_Giacomo_(1822-1881)_-_n._3022_-_Firenze_-_Chiesa_di_San_Giovanni_o_Battistero.jpg

2)  Glass mosaic ceiling of San Giovanni Baptistery, florence Italy. Image courtesy of  http://alfa-img.com/show/florence-baptistery-mosaics.html

Supplemental Twitter illustration: (25 October 2016): Title page of Index Librorum Prohibitorum (Venice 1564), courtesy of Wikipedia https://en.wikipedia.org/wiki/Index_Librorum_Prohibitorum

Neri and The Inquisition (24 October 2016):
Inquisition coat of arms, 1573. “EXURGE DOMINE ET JUDICA CAUSAM TUAM. PSALM. 73”. Enciclopedia Española. Courtesy of Wikimedia Commons. http://en.wikipedia.org/wiki/File:Escudo_inquisicion.gif

Wkly blog recap (23 October 2016): Conciatore, The Life and Times of 17th Century Glass Maker Antonio Neri, by Paul Engle, pp. 394, ISBN: 978-0974352954 Winner IPPY gold medal.

Supplemental Twitter illustration: (22 October 2016): Rock Crystal Ewer, 1000-1050 V&A Museum no. 7904-1862 Place - Egypt Dimensions - Height 19.5 cm Diameter 9 cm (of base) Height 14.3 cm (of handle) Width 2.7 cm (of handle) Width 5.2 cm (of mouth, maximum) Thickness 5 mm (of handle) Thickness 1.7 mm (of ground body) Thickness 2 mm (of body with relief decoration, approx.) Source: http://images.vam.ac.uk/indexplus/page/Home.html via Wikipedia: https://en.wikipedia.org/wiki/Fatimid_art#/media/File:Rock_crystal_ewer.jpg

Solid Water (21 October 2016): Cup with Gilded Manikin Handles, around 1550. Rock crystal, gold ornaments, 19 x 25 cm. Museo degli Argenti, Palazzo Pitti, Florence. http://www.wga.hu/support/viewer_m/z.html

Supplemental Twitter illustration: (20 October 2016): Gilded bronze mount with white marble and black glass eye. Courtesy of The Atkinson Museum, Southport, UK. @AtkinsonThe

Black is Beautiful (19 October 2016):
Black glass cameo vase, c. 1900, Thomas Webb. http://www.liveauctioneers.com/item/20750888_thomas-webb-black-cameo-glass-vase-c-1900

Supplemental Twitter illustration: (18 Oct. 2016): Giambologna's horse models were created for the equestrian statue of Grand Duke Cosimo I de' Medici in the Piazza della Signoria in Florence, which was finished in 1594. http://store.metmuseum.org/sculpture/giambologna-medici-walking-horse-sculpture/invt/06060503

Alessandro Neri  (17 October 2016):
Titian (Tiziano Vecellio); Christ Shown to the People (Ecce Homo), c.1570–76; oil on canvas; 43 x 37 5/16 in. (109.2 x 94.8 cm); Saint Louis Art Museum, Museum Purchase 10:1936. Image courtesy of Wikimedia Commons http://commons.wikimedia.org/wiki/File:Titian_-_Christ_Shown_to_the_People_(Ecce_Homo).jpg

Wkly blog recap (16 October 2016): Conciatore, The Life and Times of 17th Century Glass Maker Antonio Neri, by Paul Engle, pp. 394, ISBN: 978-0974352954 Winner IPPY gold medal.

Supplemental Twitter illustration: (15 Oct.2015): From the folk ballad Captain Ward and the Rainbow, or Ward the Pirate, (Child ballad 287).   https://en.wikipedia.org/wiki/Captain_Ward_and_the_Rainbow

Pirates! (14 Oct. 2015):
Sea fight with Barbary corsairs, c. 1581, Lorenzo Castro. Image courtesy of Wikimedia Commons http://commons.wikimedia.org/wiki/File:A_Castro,_Lorenzo_-_A_Sea_Fight_with_Barbary_Corsairs_-_Google_Art_Project.jpg

Supplemental Twitter illustration: (13 October. 2016): Bernardino Poccetti, 1610.  Strage degli innocenti (dettaglio), spedale degli Innocenti, firenze. Image courtesy https://upload.wikimedia.org/wikipedia/commons/9/97/Bernardino_poccetti%2C_strage_degli_innocenti_%28dettaglio%29%2C_spedale_degli_Innocenti%2C_firenze%2C_1610.jpg

A Gift for the Innocent (12 October 2016)
One of the distinctive roundels designed by Andrea della Robbia for the facade of the Ospedale degli Innocenti. Andrea della Robbia, Florence. Photo: Kaushal Groningen, Netherlands 2007 http://kaushalparikh.aminus3.com/image/2007-07-24.html

Supplemental Twitter illustration: (11 October 2016): Aquamanile, attributed to Roger von Helmarshausen, which may be the pseudonym of Theophilus Presbyter (fl. ca. 1070-1125). He started his career as a goldsmith in the Meuse valley, Cologne. Image courtesy of http://www.quivis.nl/?p=32

The Purse of Envy (10 October 2016)
Antonio Neri, "The Mineral Gold" Tesoro del Mondo,  (MS Ferguson 67, GB 0247, Glasgow University Library, Special Collections, 1598-1600), f. 5r.

Wkly blog recap (9 October 2016): Conciatore, The Life and Times of 17th Century Glass Maker Antonio Neri, by Paul Engle, pp. 394, ISBN: 978-0974352954 Winner IPPY gold medal.

Supplemental Twitter illustration: (8 Oct. 2016): Title page of Antonio Neri’s L’Arte Vetraria, 1612. Image courtesy of Google Books http://books.google.com/books?id=XcnYJuJpMbEC

Antonio Who? (7 Oct 2016):
Neri Medallion, Specola, Florence (manipulated to remove parallax distortion, and correct color) Original courtesy of Wikimedia commons http://commons.wikimedia.org/wiki/File:Specola,_medaglione_di_antonio_neri.JPG

Supplemental Twitter illustration: (6 Oct. 2016):The face of the clock at S.M Fiore in Florence,
Painted by Paolo Uccello (1443). Courtesy of  Wikimedia Commons, http://commons.wikimedia.org/wiki/File:Florence-Duomo-Clock.jpg

A Fast Calendar (5 Oct 2016): "Seasons Clock" by 'Proxy One' courtesy of  Worth 1000.
http://www.worth1000.com/entries/528253/seasons-clock

Supplemental Twitter illustration: (4 Oct. 2016): The Brewer, designed and engraved in the Sixteenth Century, by Jost Amman.Courtesy of Wikimedia: https://commons.wikimedia.org/wiki/File:The_Brewer_designed_and_engraved_in_the_Sixteenth._Century_by_J_Amman.png

The Duke's Mouthwash (3 Oct. 2016):
Ferdinando de’ Medici (1549-1609), Scipione Pulzone (1544 - 1598), Private collection. http://www.artfact.com/auction-lot/scipione-pulzone,-portrait-of-ferdinando-de-medi-1116-c-d137af3e89

Wkly blog recap (2 Oct 2016): Cover, Conciatore, The Life and Times of 17th Century Glass Maker Antonio Neri, by Paul Engle, pp. 394, ISBN: 978-0974352954

Supplemental Twitter illustration: (1 Oct. 2016): Philip William, Prince of Orange, Emanuel van Meteren (1535-1612), Simeon Ruytinck (-1621). Engraver: H. Jacopsen. Photography: D-vorm, Bert en Lilian Mellink. Courtesy of Wikimedia commons. https://commons.wikimedia.org/wiki/File:Emanuel_van_Meteren_Historie_ppn_051504510_MG_8780_philips_guillaume.tif

September 2016
The Blue Tower (30 Sept 2016):
Fig 1:De Blauwe Toren 1865, Jozef Linnig, Museum Plantin-Moretus / Prentenkabinet,  nr. 3359/18 28/66
(photo by Bart Huysmans) http://www.collectieantwerpen.be/component/option,com_memorix/task,result/searchplugin,categorie/Itemid,2/Categorie,tekening/cp,41/lang,fr/pp,40/mrxpopup,1/CollectionID,1/PhotoID,FAM001005136/RecordID,974067/ResultRecord,405/resultplugin,detail/do,5/

Fig 2: Antwerpen, het Arsenaal, 1601-1653
Circle of Jan Wildens, Pen and brown ink, brown wash on paper. RKD Netherlands Institute for Art History
Illustration number 0000053843. https://rkd.nl/explore/images/27381

Fig 3: Blauwe Toren, Edmond Fierlants
Antwerpen, Belgium, 1860 Photograph, Courtesy of Erfgoedbibliotheek Hendrik Conscience
http://www.sepiatown.com/812664/Blauwe-Toren-by-Fierlants-Antwerpen-Belgium

Don Giovanni (28 Sept. 2016):
Portrait of Don Giovanni di Cosimo I de’ Medici, attribution unknown,  courtesy of  Pinacoteca Nazionale di Siena http://pinacotecanazionale.siena.it/?attachment_id=216

Supplemental Twitter illustration: (27 Sept. 2016): Detail, Ceiling of Sistine chapel, hands of God and Adam.

Art and Science (26 Sept. 2016): Jacopo Ligozzi,1518,  fanciful glass vessels, ink and watercolor on paper. Galleria degli Uffizi. http://www.atlantedellarteitaliana.it/artwork-12537.html

Wkly blog recap (25 Sept 2016): Conciatore, The Life and Times of 17th Century Glass Maker Antonio Neri, by Paul Engle, pp. 394, ISBN: 978-0974352954 Winner IPPY gold medal.

Supplemental Twitter illustration: (24 Sept. 2016): Alessandro Fei (Barbieri) "Goldsmith's Workshop" c. 1572. Studiolo of Francesco I de' Medici, Palazzo Vecchio, Florence. http://quod.lib.umich.edu/a/acls/heb90034.0001.001?trgt=p_230;view=fulltext

The Art of Metals (23 Sept. 2016):
Fig. 1: Antonio Neri, "Ars Preparatio Metallor[um]" in Tesoro del Mondo, f. 8r.MS Ferguson 67, f. 10r (detail). Courtesy of University of Glasgow Library, Special Collections. http://www.gla.ac.uk/services/specialcollections/ordercopiesimages/#d.en.129979

Fig 2: Alessandro Fei (Barbieri) "Goldsmith's Workshop" c. 1572. Studiolo of Francesco I de' Medici, Palazzo Vecchio, Florence. http://quod.lib.umich.edu/a/acls/heb90034.0001.001?trgt=p_230;view=fulltext

Supplemental Twitter illustration: (22 Sept. 2016): The alchemist facilitates the growth of the metallic seed towards its two fruits or perfections—silver and gold. Emblem twelve from Michael Maier's Symbola Aureae Mensae, Frankfurt, 1617. http://www.aaroncheak.com/on-hermeticism/

Alchemy of Plants (21 Sept. 2016):
Antonio Neri, "Arts Preparatio frugu vel Piantar." in Tesoro del Mondo, f. 9r.Courtesy of University of Glasgow Library, Special Collections. http://www.gla.ac.uk/services/specialcollections/ordercopiesimages/#d.en.129979

Supplemental Twitter illustration: (20 Sept. 2016): Antonio Neri's family arms, from his childhood residence in Florence. Ceiling panel of entrance vestibule, 27 Borgo Pinti, Florence. Neri family coat of arms. Photo by Paul Engle, 2011.

Top Physician (19 Sept. 2016):
Frontispiece from Ricettario Fiorentino 1597 ed, by Neri di Jacopo Neri, Giovan Battista Benadù, Francesco Rosselli and Giovanni Galletti. Courtesy of Wellcome Trust. http://wellcomeimages.org/indexplus/result.html?*sform=wellcome-images&_IXACTION_=query&%24%3Dtoday=&_IXFIRST_=1&%3Did_ref=M0011854&_IXSPFX_=templates/t&_IXFPFX_=templates/t&_IXMAXHITS_=1

Supplemental Twitter illustration: (18 Sept 2016): Cover, Conciatore, The Life and Times of 17th Century Glass Maker Antonio Neri, by Paul Engle, pp. 394, ISBN: 978-0974352954

Supplemental Twitter illustration: (17 Sept. 2016): Salsola kali plant, Photo courtesy Zo života pred tabuľou …[From life in front of a blackboard ...] blog, (Martina)  https://martinaucitelka.wordpress.com/2015/08/20/42-slanobyl-draslomilna-salsola-kali/

Lixiviation (16 Sept. 2016):
Salsola Kali plant used in Mediterranean glassmaking. Chenopodiaceae - Salsola kali. From: Flora batava by Jan Kops and others. Amsterdam, J.C. Sepp, 1807, volume 2 (plate 133). Hand-coloured engraving (sheet 225 x 278 mm).

Supplemental Twitter illustration: (15 Sept. 2016): The Alchemist 1558, Pieter Brugle the Elder. British Museum, London, http://www.wikiart.org/en/pieter-bruegel-the-elder/the-alchemist

A Band of Alchemists: (14 Sept 2016):
The Alchemist 1558, Pieter Brugle the Elder. British Museum, London, http://www.wikiart.org/en/pieter-bruegel-the-elder/the-alchemist

Selected illustrations from Antonio Neri, "Libro intitulato Il tesoro del mondo di Pietre Antonio Neri" (MS Ferguson 67, GB 0247, Glasgow University Library, Special Collections, 1598-1600).

Portrait of Giacinto Talducci (della Casa), Justus Sustermans, 1890. Courtesy of Pitti Palace, Inv. no. 4271

Supplemental Twitter illustration: (13 Sept. 2016): Opal glass beaker, c. 1680, Czech Republic. Molded with sea gods at play. Traces of arsenic in the glass make it appear to change color like a precious opal. Glassmaking was allied to alchemy at baroque courts. This glass was made on the estate of Count Buquoy in Bohemia. courtesy of the British Museum http://wb.britishmuseum.org/MCN138#1489945001

Deadly Fumes (12 Sept. 2016):  Nikolaus Alexander  Mair von Landshut, 1605. (active ca. 1485, d 1520). From a series of six engravings of memento mori. Courtesy of The Trustees of the British Museum, Department: Prints & Drawings, Registration number: 1893,1020.4

Wkly blog recap (11 Sept 2011): Alchemy in the Kitchen; C17th Lapidary; Discovery of Glass  #histSTM #glass http://www.conciatore.org/

Supplemental Twitter illustration: (10 Sept. 2016): Ancient glass bottle Sidon, (c.150-300 CE) Louvre, Paris Musée du Louvre, Atlas database: entry 4565. Photo Marie-Lan Nguyen (2006), courtesy Wikimedia https://commons.wikimedia.org/wiki/File:Bottle_ivy_Louvre_MND505.jpg

Discovery of Glass (9 Sept. 2016): Giovan Maria Butteri, Studiolo of Francesco I de' Medici , c.1572 http://commons.wikimedia.org/wiki/File:Studiolo,_pitture_10_giovanni_maria_butteri,_Scoperta_del_vetro.JPG

Supplemental Twitter illustration: (8 Sept. 2016): Grand Ducal Workshops, Panel with Vase of Flowers, early 1600s; pietre dure mosaic on black marble ground. Florence, Museo dell’ Opificio delle Pietre Dure. courtesy of Wikimedia https://commons.wikimedia.org/wiki/File:Pannello_con_vaso_di_fiori_dall%27opificio_delle_pietre_dure,_1600-50_ca.,_02.JPG

Stonework (7 Sept. 2016):
Antonio Neri, Tesoro del Mondo, 1598-1600, f. 7v, "Ars Preparatio Lapidum"(detail). Courtesy of University of Glasgow Library, Special Collections. http://www.gla.ac.uk/services/specialcollections/ordercopiesimages/#d.en.129979

Supplemental Twitter illustration: (6 Sept. 2016): The Alchemist's Experiment takes Fire, 1687
Hendrick Heerschop, Dutch. Courtesy of the Chemical Heritage Foundation via wikipedia: https://en.wikipedia.org/wiki/Hendrik_Heerschop#/media/File:The_Alchemist%E2%80%99s_Experiment_Takes_Fire_1687_CHF_fa_2000.001.276.JPG

Alchemy in the Kitchen (5 Sept. 2016):
Antonio Neri, 1508-1600, Tesoro del Mondo, "Ars Preparatio Animalium”, MS Ferguson 67, f. 10r (detail). Courtesy of University of Glasgow Library, Special Collections. http://www.gla.ac.uk/services/specialcollections/ordercopiesimages/#d.en.129979

Supplemental Twitter illustration: (4 Sept 2016): Cover, Conciatore, The Life and Times of 17th Century Glass Maker Antonio Neri, by Paul Engle, pp. 394, ISBN: 978-0974352954

Supplemental Twitter illustration: (3 Sept 2016):This woodcut initial "D" appears in Antonio Neri’s L'Arte Vetraria (The Art of Glass, 1612), the first guide devoted to glassmaking. Courtesy of A Mass of Odds and Ends" Tumblr  "http://extabulis.tumblr.com/post/140276478624/this-woodcut-initial-appears-in-antonio-neris

A Very Good Run: (2 Sept. 2016): Title Page of L'Arte Vetraria, 1612, by Antonio Neri. for more see. http://www.cmog.org/article/antonio-neri-l-arte-vetraria-1612

Supplemental Twitter illustration: (1 Sept 2016): The Small Limekiln (Landscape with Morra Players) by Pieter van Laer (1599–after 1641) - Web Gallery of Art. Courtesy of Wikimedia Commons https://en.wikipedia.org/wiki/Bamboccianti#/media/File:Pieter_van_Laer_-_Landscape_with_Morra_Players_-_WGA12369.jpg

August 2016
Lime (31 August 2016)
Vintage 1920's Water Glass Label. Photo credit: HelenLaRuse
https://www.etsy.com/listing/54253677/vintage-1920s-water-glass-label-egg

Supplemental Twitter illustration: (30 August 2016): Sulfur crystal, from Agrigento, Sicily, Italy Photo by Eric Hunt 2006, courtesy of Wikimedia foundation https://commons.wikimedia.org/wiki/File:Large_Sulfur_Crystal.jpg

Sulfur (29 August 2016)
Alchemical Symbol for Sulfur, created 2014 by Paul Engle in Photoshop. This image is in the public domain and may be used freely without attribution.

Weekly Recap (28 August 2016): Anton Hohenstein, 1860s "Benjamin Franklin's reception at the court of France, 1778. Respectfully dedicated to the people of the United States." Print shows Benjamin Franklin receiving a laurel wreath upon his head. From left to right, some of the members of the French court.
file:///E:/TOSHIBA%20(F)/Benjamin%20Franklin/Paris/File_Benjamin%20Franklin's%20Reception%20at%20the%20Court%20of%20France%201778.jpg%20-%20Wikimedia%20Commons.html

Supplemental Twitter illustration: (27 August. 2016): The alchemist (Adriaen Van Ostade) http://www.salvatorefiorillo.it/dailylife.html

The Dregs (26 August 2016):
"The struggle of fixed and volatile" allegorical illustration from Splendor solis [detail] 1582. British Library, London, (Harley MS 3469). Courtesy of http://bordel.haghn.com/Art/Illustration/Splendor%20Solis/

Supplemental Twitter illustration: (25 August 2016): Salsola Kali plant used in Mediterranean glassmaking. Chenopodiaceae - Salsola kali. From: Flora batava by Jan Kops and others. Amsterdam, J.C. Sepp, 1807, volume 2 (plate 133). Hand-coloured engraving (sheet 225 x 278 mm).

Glass Salt (24 August 2016):
Denis Diderot, Jean le Rond d'Alembert eds., L'Encyclopédie, Vol. 10 (1772), “Wood Glass Making,” Raking Out Baked Frit (Verrerie – Verrerie en bois ou petite verrerie à pivette) fig. 15.

Supplemental Twitter illustration: (23 August 2016): Benjamin Franklin (1706-1790) , North American printer, publisher, writer, scientist, inventor and statesman 79 years old. Courtesy Wikipedia https://en.wikipedia.org/wiki/Benjamin_Franklin#/media/File:BenFranklinDuplessis.jpg

Franklin and Glass (22 August 2016): Portrait of Benjamin Franklin, lampworked glass murrine,
2016, by Stephen Boehme, Riverton, Utah. https://www.etsy.com/people/BoehmePottery

Weekly Recap (21 August 2016): Hand tools used by alchemists. From  John French - The Art of Distillation - Book I, 1653 ed.  http://www.levity.com/alchemy/jfren_1.html

Supplemental Twitter illustration: (20 August 2016): Potash glass, 1619, engraved by Anna Roemers Visscher with a poem dedicated to the (later) father of astronomer and physicist Christiaan Huygens.  Rijksmuseum Amsterdam.  https://commons.wikimedia.org/wiki/File:Roemer_met_een_gedicht_op_Constantijn_Huygens,_anoniem,_Anna_Roemers_Visscher,_1619_-_Rijksmuseum_-_BK-1983-15.jpg

Tartar Salt (19 August 2015): Potassium bitartrate crystals. Photo Courtesy of Vintner’s Cellar Waterloo http://www.vintnerscellarwaterloo.com/article/29/wine_diamonds_or_crystals_in_a_bottle.html

Supplemental Twitter illustration: (18 August 2016): Recovering and concentrating Vitriol from a mining operation in the 16th century, from Agricola, De Re Metalica (1580) http://www.chokier.com/IMAGES/ROCHER/Agricola-De_re_metallica-Couperose.jpg

Vitriol of Venus (17 August 2016): Copper Sulfate (vitriol of copper), courtesy of  Wikimedia Commons: http://en.wikipedia.org/wiki/File:Copper_sulfate.jpg Photo by: ‘Stephanb’ http://de.wikipedia.org/wiki/Benutzer:Stephanb

Supplemental Twitter illustration: (16 August 2016): Saturn, ruler of the signs of Aquarius and Capricorn, miniature attributed to Cristoforo de Predis (1440-before 1486) from the astrological book De Sphaera, lat manuscript 209, folio 5, verse, parchment, ca 1470. Detail. Italy, 15th century. http://symboldictionary.net/library/graphics/symbols/glossarysaturnus.jpg

Sulfur of Saturn (15 August 2016): Peter Paul Rubens c. 1630,  “Abundance (Abundantia).” http://en.wikipedia.org/wiki/Abundantia

Weekly Recap (14 August 2016): Israeli Archaeologists Uncover Roman Period Glass Factory. Small fragments of raw glass as they were found at the site. Image credit: Assaf Peretz / Israel Antiquities Authority. http://www.sci-news.com/archaeology/roman-period-glass-factory-israel-03779.html

Supplemental Twitter illustration: (13 August 2016):
Entrance bridge to the old  Pauley and Co. glass factory as it stands today. Photo (c) courtesy of Big Bead Little Bead Blog.
http://big-bead-little-bead.blogspot.com/2011/04/history-venetian-glass-part-3-of-3.html


Alberico Barbini (12 August 2016) - In Memory of Mario Santini.
A section from a larger view of Venice with the island of Murano in the distance, circa 1600 attributed to Danckerts in the style of the famous woodcut print by Jacopo de’ Barbari circa 1500. http://drawingdetail.tumblr.com/post/21644545773/a-section-from-a-larger-view-of-venice-with-the

Sal Ammoniac (10, 11 August 2016):
Alchemical symbols used to denote sal ammoniac. Paul Engle 2014, Photoshop, (after Medicinisch-Chymisch- und Alchemistisches Oraculum, Ulm, 1755).

Natural formation of Sal Ammoniac courtesy https://en.wikipedia.org/wiki/Sal_ammoniac

Supplemental Twitter illustration: (9 August 2016): 
Renaissance instruction in preparation of chemicals. From Annibal Barlet, Le Vray et methodique cours de Chymie (Paris, 1653) Image courtesy of U.S. National Library of Medicine http://www.nlm.nih.gov/exhibition/paracelsus/universities.html

Alchemy School (8 August 2016)
Frontispiece woodcut from Zadith ben Hamuel De Chemia Senioris, 1566. See http://www.levity.com/alchemy/amclglr5.html.

Weekly Recap (7 August 2016): Handled vessel, enamel on glass, Egypt or Syria 1310-1330 Corning Museum of Glass #55.1.36  http://www.cmog.org/article/brief-history-islamic-glassmaking

Supplemental Twitter illustration: (6 August 2016): Spherical bezoar stones, one from unknown animal, 1551-1750 the other (right) from a camel. Photo Photo number: L0058457, Wellcome Trust Images, courtesy of Wikimedia commons.  https://commons.wikimedia.org/wiki/File:Spherical_bezoar_stone_from_unknown_animal,_1551-1750_Wellcome_L0058457.jpg

Filippo Sassetti (5 August 2016):
Goa, India 1509. “Goa fortissima India urbs in Christianorum potestatem anno salutis 1509 deuenit.” [detail] From Braun and Hogenberg, Civitates Orbis Terrarum I, p. 54. First Latin edition of was published in 1572. (After an unidentified Portuguese manuscript).

Supplemental Twitter illustration (4 August 2016): Crocus Martis powder, courtesy of http://dartigne.blogspot.com/2010/05/chemistry-and-alchemical-understanding.html

Crocus Martis (3 August 2016):
From Medicinisch-Chymisch- und Alchemistisches Oraculum, Ulm, 1755. Courtesy of The Alchemy Website, http://www.levity.com/alchemy/alchemical_symbols06.html

Supplemental Twitter illustration: (2 August 2016): A grouping of ancient counterfeit coins, courtesy of Coinweek, photo credit: Mike Markowitz  http://www.coinweek.com/featured-news/bad-money-ancient-counterfeiters-and-their-coins/

Reports from Parnassus (1 August 2016):
The Parnassus is a fresco painting by Raphael in the Raphael Rooms ("Stanze di Raffaello"), in the Palace of the Vatican in Rome, painted at the commission of Pope Julius II in 1511. [detail] courtesy of Wikipedia: http://en.wikipedia.org/wiki/The_Parnassus#mediaviewer/File:Rafael_-_El_Parnaso_(Estancia_del_Sello,_Roma,_1511).jpg

July 2016
Weekly Recap (31 July 2016): Portrait of Roman mosaicist Michelangelo Barberi, 1809. Italian pencil, sanguine on paper, courtesy The Russian Museum, St. Petersburg. http://www.rusmuseum.ru/eng/collections/drawing/photos

Supplemental Twitter illustration: (30 July 2016): A small Medusa's head in opaque red glass made sometime in the first century AD Approximately one cm high and as wide, Corning Museum of Glass in NY. http://www.cmog.org/artwork/disk

Purpurine (29 July 2016):
1) Fabergé, St. Petersburg. Cherry Sprig. c.1900. The cherries are made of purpurine, the leaves are nephrite, the stalk, sprouting from its rock-crystal pot is made of gold.  Géza von Hapsburg: Fabergé, Imperial Craftsman and His World, London: Booth-Clibborn, 2000, p.117

2) Red Glass Beads, 1st cent. BCE, Tissamaharama, Sri Lanka. Rösch, Cordelia; Hock, Rainer; Schüssler, Ulrich; Yule, Paul; Hannibal, Anne. “Electron Microprobe Analysis and X-ray Diffraction Methods in Archaeometry: Investigations on Pre-Islamic Beads from the Sultanate of Oman” in: European Journal of Mineralogy, 9 (1997), 763–783. (Specifically, beads found at Tissamaharama, pp. 771,772). http://archiv.ub.uni-heidelberg.de/propylaeumdok/volltexte/2009/305

3) A small Medusa's head in opaque red glass made sometime in the first century AD Approximately one cm high and as wide, Corning Museum of Glass in NY. http://www.cmog.org/artwork/disk

4) Roman bowl in red opaque glass  sold at Christie's, London, 2010. A Roman opaque red glass patella cup (haematinon) c.1st cent. BCE/CE Sale#5488, lot 47.
http://www.christies.com/lotfinder/ancient-art-antiquities/a-roman-opaque-red-glass-patella-cup-5358311-details.aspx

5) Portrait of Roman mosaicist Michelangelo Barberi, 1809. Italian pencil, sanguine on paper http://www.rusmuseum.ru/eng/collections/drawing/photos

6)  One of a pair of Tazzas, Leopoldo Bonafede,  Imperial Glassworks (Russian, c.1867) purpurine, gilded bronze, colored glass. http://art.thewalters.org/detail/77444/pair-of-tazzas/

Supplemental Twitter illustration: (28 July 2016): Roman Glass gold-band mosaic scyphus (drinking cup) late 1st century B.C.–early 1st century A.D. Metropolitan Museum of Art NY. Edward C. Moore Collection, Bequest of Edward C. Moore, 1891. Accession Number: 91.1.2053  http://www.metmuseum.org/toah/works-of-art/91.1.2053/

Supplemental Twitter illustration: (28 July 2016): Roman blown-glass cinerary urn, dated between 1st and 3rd centuries AD. Height: 31 cm. Base diameter: 10 cm. Rim's diameter: 15.5 cm. Lid's height: 6 cm. Location: National Archaeological Museum of Spain (gift of Alfonso de Borbón y Borbón, 1990). Photo by Luis García (Zaqarbal), 3 December 2008. Courtesy of Wikimedia Foundation  https://commons.wikimedia.org/wiki/File:Urna_cineraria_romana_de_vidrio_(M.A.N._Inv.1990-69-150)_01.jpg


Decolorization of Glass (27 July 2016):
Image of two colored glass discs in green and magenta. Paul Engle, 2013, Photoshop.

Supplemental Twitter illustration: (26 July 2016) Frontispiece from Pierfilippo Covoni, Don Antonio de' Medici Al Casino Di San Marco, Firenze, 1892. Image from personal collection of Paul Engle. There is a public domain copy here: http://books.google.com/books?id=5-sVAAAAYAAJ

Francesco and Bianca (25 July 2016):
"Antique print" Bianca Cappello and Grand Duke Francesco (with Don Antonio) -attriburtion unknown, 19th century. http://www.ebay.com/itm/Antica-Stampa-BIANCA-CAPPELLO-E-IL-GRANDUCA-FRANCESCO-DE-MEDICI-1870-Old-Print-/160798258706

Weekly Recap (24 July 2016):Michael I of Russia, attribution unknown, c17-18th. Courtesy Wikimedia commons https://commons.wikimedia.org/wiki/File:Michael_russia_big.jpg

Supplemental Twitter illustration: (23 July. 2016): Don Giovanni di Cosimo I de’ Medici, courtesy of Wikimedia commons https://commons.wikimedia.org/wiki/File:Don_giovanni_de_medici.jpg

Don Giovanni in Flanders (22 July 2016):
Spanish attack on a Flemish village, Attr:  Pieter Snayers. Courtesy of http://commons.wikimedia.org/wiki/File:Peter_Snayers_-_Spanischer_%C3%9Cberfall_auf_ein_fl%C3%A4misches_Dorf.jpg

Supplemental Twitter illustration: (21 July 2016): Vannoccio Biringuccio as depicted in the Specola Museum in Florence. Photo by I, Sailko 2009.  https://en.wikipedia.org/wiki/Vannoccio_Biringuccio#/media/File:Specola,_medaglione_di_vannoccio_biringucci.JPG

The Art of Fire (20 July 2016):
Antonio Neri, MS Fergusin 67, 1598-1600, ink and water color. Antonio Neri, Tesoro del Mondo (Treasure of the World), Courtesy of University of Glasgow Library, Special Collections. http://www.gla.ac.uk/services/specialcollections/ordercopiesimages/#d.en.129979.

Supplemental Twitter illustration (19 July 2016):  Jürgen Ovens (1623–1678) Portrait of Adam Olearius courtesy of Wikimedia commons https://commons.wikimedia.org/wiki/File:Adam-Olearius.jpg

Olearius on Glass (18 July 2016):
Adam Olearius (1599-1671), 18th century engr, Attr. unknown, source: http://www.aschersleben-tourismus.de/cms/persoenlichkeiten/adam-olearius/  (Probably a copy of: 1669 oil on canvas portrait by Juriaen Ovens (1623-1678) ) see: https://commons.wikimedia.org/wiki/File:Adam-Olearius.jpg .

Weekly Recap (17 July 2016): A light yellow glass bowl from the Qing Dynasty, when an imperial glass making factory was known to exist. Courtesy of http://resources.made-in-china.com/article/culture-life/zEPmWSXlsQDk/Exquisite-Ancient-Chinese-Glass-Wares/

Supplemental Twitter illustration (16 July 2016):  Giuseppe Bertini (1825-1898) , Stained glass, The Sculptor Mauro Gandolfi Dressed as Giambologna  http://www.allposters.com/-sp/The-Sculptor-Mauro-Gandolfi-Dressed-as-Giambologna-Posters_i12129995_.htm

The Neighbors (15 July 2016):
"Portrait of Giamologna"by Hendrick Goltzius, Teylers Museum, courtesy of  Wikimedia Commons. http://en.wikipedia.org/wiki/File:Goltzius-Bologna.png

Supplemental Twitter illustration (14 July 2016): Turquoise glass goblet, Venetian, c1490, 19cm tall.. British Museum collection. .http://britishmuseum.tumblr.com/post/121113973422/turquoise-glass-goblet

Turquoise Glass (13 July 2016):
Turquoise glass stamp of calif Mustadi 1170-1180. Photo by PHGCOM, 2009, at British Museum. https://commons.wikimedia.org/wiki/File:Turquoise_glass_stamp_of_calif_Mustadi_1170_1180.jpg

Supplemental Twitter illustration (12 July 2016): Secret glass formula booklet from Boston Crown Glass Company 1811-12.(first page) Courtesy of  the Rakow Library of the Corning Museum of glass. http://d3seu6qyu1a8jw.cloudfront.net/sites/default/files/collections/56/56F26073-E684-4C2C-AA7E-01BDBE61E111.pdf

Glass Headhunters (11 July 2016):
Berkshire Glass Works cane from 1878. It’s filled with the pure quartzite sand they were so proud of. It was 99.98% pure, the purest in the world. – Charles Flint http://www.peachridgeglass.com/2012/06/glass-cane-whimsies/

Glass bagpipe ornament, blown borosilicate glass. Courtesy of artist via Etsy, Joanne R. Paller in Acworth, Georgia. https://www.etsy.com/listing/214923940/blown-glass-bagpipe-christmas-ornament?ref=related-2

Weekly Recap (10 July 2016):Glass mosaic perfume bottle (unguentarium), Late Hellenistic period, 1st century B.C. photo courtesy of Pintrest: https://www.pinterest.com/pin/61431982386679809/

Supplemental Twitter illustration (9 July 2016): Domenico Ghirlandaio, tempera on wood 1483. Madonna and Child Enthroned with Saints, from San Giusto Alle Mura, Florence. Now Galleria degli Uffizi, courtesy Wikimedia commons https://commons.wikimedia.org/wiki/File:Domenico_Ghirlandaio_Madonna_and_Child_enthroned_with_Saint_c_1483.jpg

San Giusto Alle Mura (8 July 2016):
Window of  Santa Maria del Fiore cathedral, Florence, Italy. Window detail of Santa Maria del Fiore, Florence. Photo by Georges Jansoone, courtesy  of Wikimedia Commons. http://commons.wikimedia.org/wiki/Category:Stained_glass_windows_in_Santa_Maria_del_Fiore_(Florence)#mediaviewer/File:Santa_Maria_del_Fiore_colour_glass_(1623723568).jpg

Supplemental Twitter illustration (7 July 2016): Oculus above the portal of the White Penitents Chapel in Montpellier, France. Stained glass window featuring the Holy Spirit, as a dove, symbol of the Confraternity and motto: "Spiritus Sanctus ubi vult spirat". [The Holy Spirit blows where it wishes] 17th century. Photo courtesy Wikimedia.

Montpellier (6 July 2016):
Engraved view of Montpellier, France, in the seventeenth century. German, 1660. Attribution unknown, http://www.museeprotestant.org/en/notice/the-last-religious-wars/

Supplemental Twitter illustration: (5 July 2016): From 1920&30s Hollywood Mansion Library Cardinal Richelieu Stained Glass Panel courtesy Ebay http://www.ebay.com/itm/From-1920s-Hollywood-Mansion-Library-CARDINAL-RICHELIEU-Stained-Glass-Panel-/131013281885

Vitrum Flexile (4 July 2016): Roman Emperor Tiberius - Glass paste cameo c 20ACE by "Herophilos, Son of Dioskurides. Courtesy https://www.pinterest.com/pin/354799276865127678/

Weekly Recap (3 July 2016): Still Life With Burning Candle, Pieter Claesz, 1627, Mauritshuis, The Hauge https://hogsheadwine.wordpress.com/2011/05/20/wine-related-dutch-paintings-of-the-17th-century/

Supplemental Twitter illustration: (2 July 2016) Medieval era enamel beaker once owned by Piero de' Medici, Metropolitan Museum of Art, The Cloisters, New York. http://joelgarten.com/blog/?p=171

The Material of All Enamel: (1 July 2016):
Léonard Limosin, Allegory of Catherine de' Medici as Juno, French, 1573, Polychrome enamel  on copper and silver. Courtesy Getty Museum http://search.getty.edu/museum/records/musobject?objectid=1340

June 2016
Supplemental Twitter illustration: (29 June 2016): Pica marina, Ulisse Aldrovandi, "Le tavole acquerellate di Ulisse Aldrovandi Tavole vol. 002 Animali ..." Manoscritto, Parnassus Scientiarum, Catalogue of the Waller Collection of History of Science and Medicine, Edited by Marco Beretta and Andrea Scotti Interface editor Daniele Nuzzo, Courtesy  of the University of Bologna

True Colors (28 June 2016)
The European Roller [Pica Marina] Photo: Mehmet Goren, Pica Marina. Courtesy of Mehmet Goren. http://www.trakus.org/kods_bird/uye/?fsx=2fsdl15@d&idx=4193#.Uij5udKsjTo

Pica marina, Ulisse Aldrovandi, "Le tavole acquerellate di Ulisse Aldrovandi Tavole vol. 002 Animali ..." Manoscritto, Parnassus Scientiarum, Catalogue of the Waller Collection of History of Science and Medicine, Edited by Marco Beretta and Andrea Scotti Interface editor Daniele Nuzzo, Courtesy  of the University of Bologna. http://www.filosofia.unibo.it/aldrovandi/pinakesweb/compdetail.asp?compid=3521

Supplemental Twitter illustration: (28 June 2016): Ottavio Leoni Portrait of Francesco Maria del Monte (1578–1630). Courtesy of Wikimedia Commons. http://en.wikipedia.org/wiki/Ottavio_Leoni

The Portland Vase (27 June 2016):
Portland Vase image courtesy of Wikimedia commons: http://commons.wikimedia.org/wiki/File:Portland_Vase_BM_Gem4036_n4.jpg

Twitter inage: Joshua Reynolds (1723–1792), Portrait of Josiah Wedgwood (1730-1795)  English businessman and early industrial producer of pottery, oil on canvas.Courtesy of Wikimedia https://commons.wikimedia.org/wiki/File:JosiahWedgwood.jpeg

Weekly Recap (26 June 2016): Portland Vase, ancient cameo glass, once owned by Cardinal del' Monte, created c.1st cent. British Museum https://humidfruit.wordpress.com/tag/portland-vase/

Supplemental Twitter illustration: (25 June 2016): Michelangelo Caravaggio, Jupiter, Neptune and Pluto, c. 1597. Casino Ludovisi. Courtesy of Wikipedia: http://en.wikipedia.org/wiki/Jupiter,_Neptune_and_Pluto

The Cardinal's Ceiling (24 June 2016)
Antonio Neri, Treasure of the World, f.xxviii-v. Courtesy of University of Glasgow Library, Special Collections. http://www.gla.ac.uk/services/specialcollections/ordercopiesimages/#d.en.129979

Michelangelo Caravaggio, Jupiter, Neptune and Pluto, c. 1597. Casino Ludovisi. Courtesy of Wikipedia: http://en.wikipedia.org/wiki/Jupiter,_Neptune_and_Pluto

Supplemental Twitter illustration: (23 June 2016): German postal stamp,  First Day of Issue: 1984-10-18. Courtesy Wikimedia commons.  https://commons.wikimedia.org/wiki/File:BM-TdB1984.jpg

The Old Post Road (22 June 2016): A coach of the middle of the seventeenth century: from an engraving by John Dunstall. A Student's History of England, v. 2 (of 3),1509-1689, by Samuel Rawson Gardiner
http://www.gutenberg.org/files/40192/40192-h/40192-h.htm

Supplemental Twitter illustration: (21 June 2016): The Medici Glass Workshop (detail) in the Galleria dei Lavori of the Uffizi. Giovanni Maria Butteri (Italian, 1540–about 1606), 1570. Palazzo Vecchio, Studiolo of Francesco I.

Galleria Lavori (20 July 2016): Giovanni Stradano, alias Jan van der Straet (1523-1605), "Alchemy Studio" (1570). Palazzo Vecchio (Studiolo), Florence.

Weekly Recap (19 June 2016): Persian glass bowl 10th century, Karun Collection. photo courtesy of Karun Thakar  http://www.karuncollection.com/?p=160

Supplemental Twitter illustration: (18 June 2015):Piazza Santa Trìnita, Florence, the column of justice,  a massive granite column from the east section of the Baths of Caracalla in Rome. It was the gift of Pope Pius IV in 1560 for Cosimo I, the first Grand Duke of Florence. In 1581 the Justice statue by Tadda was added to the top of the column http://www.florence-on-line.com/piazzas/piazza-santa-trinita.html

Weights and Measures (17 June 2016):
"The Proclamation regarding Weights and Measures A.D. 1556" by Ford Madox Brown, a mural at Manchester Town Hall. Courtesy of Wikimedia commons. http://commons.wikimedia.org/wiki/File:BrownManchesterMuralProclamation.jpg

Supplemental Twitter illustration: (16 June 2016): Dutch Factory at Surat as seen in April 1629. Plagerized / Reproduced by J.A. von Mandelso and labelled 'English factory' after an original etching by Pieter van den Broecke (1585-1640), a Dutch cloth merchant in the service of the Dutch East India Company in Korte Historiael ende Journaelsche Aenteyckeninghe published in Amsterdam, 1634. The only difference between the Mandelso & Broecke images is the distribution of people passing in front of the building. Image credit: British Library: 10095.aaa.49, p. 121 http://www.heritageinstitute.com/zoroastrianism/parsi/surat2.htm

Thévenot in India (15 June 2016): Antique gold finger Ring Arsi Rajasthan India http://www.ebay.com/itm/Rare-Vintage-antique-20-carat-Gold-finger-Ring-Arsi-Rajasthan-India-/380447781358

Supplemental Twitter illustration: (14 June 2016): Glass jugs and rosewater sprinkler come from Shiraz (18th century), courtesty of Glassware and Ceramic Museum, Tehran Iran http://www.islamichistoryandtravel.com/glassware_and_ceramic_museum_tehran_photos.html

Thévenot Continues East (13 June 2016):
Stained glass windows of the Nasir al-Mulk 'Pink Mosque', Shiraz, Iran. Photo by Domiri Mohammad Reza Ganji. http://iranbusinessportal.com/stunning-photos-by-an-iranian-physicis/

Weekly Recap (12 June 2016):  Specimen of Blaschka Marine Life: Physophora magnifica (Nr. 213), Leopold and Rudolf Blaschka, Dresden Germany, 1885. Lent by Cornell University, Department of Ecology and Evolutionary Biology. L.17.3.63-516. Photo courtesy of Corning Museum of Glass (CMOG) http://www.cmog.org/press-release/blaschka-glass-marine-creatures-exhibition-opens-may-2016-corning-museum-glass

Supplemental Twitter illustration: (11 June 2016) Ebay, "Rare!! Vintage antique 20 carat Gold finger Ring Arsi Rajasthan India"  http://www.ebay.com/itm/Rare-Vintage-antique-20-carat-Gold-finger-Ring-Arsi-Rajasthan-India-/380447781358

Travels To The East (10 June 2016):
Jean de Thévenot, from "Relation d'un voyage fait au Levant" Frontispiece, Thévenot, Jean de. Relation d’un voyage fait au Levant. Paris: L. Billaine, 1665 Image courtesy of Wikimedia Commons http://commons.wikimedia.org/wiki/File:Jean_de_Th%C3%A9venot_(1664).jpg

Supplemental Twitter illustration: (9 June 2016): http://commons.wikimedia.org/wiki/File:Orto_botanico_di_Pisa_-_old_instiitute.JPG Orto botanico di Pisa - old institute building. Pisa, Italy. Photo by "Daderot" 2006, GDFL.

Neri in Pisa (8 June 2016):
Grotesque style Euer by Niccolo Sisti, Museo Internazionale delle Ceramiche in Faenza. Photo 2009, Courtesy of Wikimedia Commons, the Wikimedia OTRS system, ticket #2009032510047417. http://commons.wikimedia.org/wiki/File:Pisa_Nicol%C3%B2_Sisti_1590c_21511.JPG

Supplemental Twitter illustration (7 June 2016):  Federico Barocci (1535–1612), Aeneas' Flight from Troy, 1598. Galleria Borghese  https://commons.wikimedia.org/wiki/File:Aeneas%27_Flight_from_Troy_by_Federico_Barocci.jpg

We Were Trojans (6 June 2016):
Giovanni Domenico Tiepolo or 'Giandomenico Tiepolo' (1727-1804), "Procession of the Trojan Horse in Troy", Wikimedia foundation, (http://commons.wikimedia.org/wiki/File:Giovanni_Domenico_Tipeolo,_Procession_of_the_Trojan_Horse_in_Troy._1773..jpg)

Weekly Recap (5 June 2016): Vendel-era (550-720) glass drinking horn (Swedish Museum of National Antiquities) Photo by "Berig" courtesy of Wikipedia https://en.wikipedia.org/wiki/File:Vendel-era_bronze_horn_fittings_and_glass_drinking_horn_(Swedish_Museum_of_National_Antiquities).jpg

Supplemental Twitter illustration (4 June 2016): Frontispiece to 'The History of the Royal-Society of London' by Thomas Sprat, etching by Wenceslaus Hollar, after John Evelyn, 1667

Neri's Contribution (3 June 2016):
The center third of "Education" (1890), a stained glass window by Louis Comfort Tiffany and Tiffany Studios, located in Linsly-Chittenden Hall at Yale University. It depicts Science (personified by Devotion, Labor, Truth, Research and Intuition) and Religion (personified by Purity, Faith, Hope, Reverence and Inspiration) in harmony, presided over by the central personification of "Light·Love·Life".  https://en.wikipedia.org/wiki/Relationship_between_religion_and_science

Supplemental Twitter illustration (2 June 2016): Paste gem and gold finger ring, 1600s, courtesy og The Museum of London, via https://www.pinterest.com/pin/76772368617930715/

Artificial Gems (1 June 2016):
Pendant, paste gems, Portugal ca. 1750. V&A acquisition nr.M.68-1962 http://collections.vam.ac.uk/item/O113043/pendant-unknown/

May 2016 
Supplemental Twitter illustration (28 May 2016): Pieter van der Borcht, Tournament with the Ximenez house in the background, engraving. In Johannes Bochius, Descriptio publicae gratulationis, spectaculorum et ludorum, in adventu Sereniss. Principis Ernesti Archiducis Austriae. Antverpiae: ex officina Plantiniana, 1595. 140-141. Image: © Rijksmuseum. http://ximenez.unibe.ch/meir/

Dear Friends (30 May 2016):
The library of the University of Leiden (1610), where Christoph Plantin worked from 1583 to 1585. Picture courtesy of Frédéric Barbier http://histoire-du-livre.blogspot.com/2012_04_01_archive.html (28 Avril 2012). University Library Leiden in 1610 from Woudanus in ''Stedeboeck der Nederlanden'', Amsterdam: Willem Blaeu, 1649.

Weekly Recap (29 May 2016): Mortar and Pestle. Probably Amsterdam, perhaps 17th century. H. (mortar) 10.3 cm. The Corning Museum of Glass (2006.3.78) Gift of The Wunsch Foundation Inc. http://www.cmog.org/article/glass-alchemists

Supplemental Twitter illustration (28 May 2016): Francesco Lana de Terzi's flying boat concept, from "Prodromo" chapter 6 (Fabricare una nave, che camini sostenata sopra l'aria a remi, & a veli) 1670 . https://en.wikipedia.org/wiki/Francesco_Lana_de_Terzi

A Matter of Plagiarism (27 May 2016):
Francesco Lana Terzi (1631-1687), Courtesy of Wikimedia Commons (Italy). http://it.wikipedia.org/wiki/File:Lanadeterzi.jpg

Diligence (25 May 2016): After Pieter Brueghel the Younger, entitled The Alchemist. Circa 1600 (detail) courtesy of Wikipedia  https://en.wikipedia.org/wiki/Pieter_Brueghel_the_Younger

Supplemental Twitter illustration (24 May 2016): Georges de La Tour’s The Fortune Teller c.1630. The Metropolitan Museum of Art, New York http://www.abcgallery.com/L/latour/latour33.html

Agnolo della Casa (23 May 2016):
Spine of Agnolo della Casa, BNCF MS. Palatino 867 [756 - 21, 2.] Serie Targioni, II, v. 3. Courtesy of Biblioteca Nazionale Centrale di Firenze.

Weekly Recap (22 May 2016): German (Lower Rhine), Tobias and Sarah on their Wedding Night, about 1520. © V&A Images / Victoria and Albert Museum, London http://www.culture24.org.uk/art/art51800

Supplemental Twitter illustration (21 May 2016): Antonio Neri, "L'Arte Vetraria…" (Firenze: Giunti, 1612), p. i. (title page) https://books.google.com/books?id=XcnYJuJpMbEC

A Deeper Accomplishment   (20 May 2016):  
From Antonio Neri, "Treasure of the World" MS Ferguson 67, f. 22r. Courtesy of University of Glasgow Library, Special Collections.

Supplemental Twitter illustration: (19 May 2016): "Florence - Church of San Giovanni, the Baptistry", Photo: Giacomo Brogi (1822-1881). Catalogue # 3022. Courtesy of Wikimedia Commons.
http://commons.wikimedia.org/wiki/File:Brogi,_Giacomo_(1822-1881)_-_n._3022_-_Firenze_-_Chiesa_di_San_Giovanni_o_Battistero.jpg

The Neri Godparents III (18 May 2016):
Portrait of Alessandro Gondi as a child (1569) by Anguissola Sofonisba. Courtesy of Fondazione Federico Zeri, University of Bologna, entry #36011, container #0371.
http://fe.fondazionezeri.unibo.it/catalogo/scheda.jsp?id=35847&apply=true&titolo=Anguissola+Sofonisba%0a%09%09%09%0a%09%09+++++%2c+Ritratto+di+Alessandro+Gondi&tipo_scheda=OA&decorator=layout_S2

Supplemental Twitter illustration: (17 May 2016):
Goa, India 1509. “Goa fortissima India urbs in Christianorum potestatem anno salutis 1509 deuenit.” [detail] From Braun and Hogenberg, Civitates Orbis Terrarum I, p. 54. First Latin edition of was published in 1572. (After an unidentified Portuguese manuscript).

The Neri Godparents II (16 May 2016):
Opening lines of Piero della Stufa’s MS. translating Luca della Robbia from Latin to Italian. Courtesy of Rare Book & Manuscript Library, University of Pennsylvania, Ms. Codex 461 http://hdl.library.upenn.edu/1017/d/medren/2486632

Weekly Recap (15 May 2016): Buonsignori map 1587, detail showing the Casino di San Marco, Florence, Italy. https://commons.wikimedia.org/wiki/File:Pianta_del_buonsignori,_dettaglio_049_casino_del_gran_duca_(casino_di_san_marco).jpg

Supplemental Twitter illustration: (14 May 2016): Detail from the "Baptism Window" at St. Mary's Episcopal Cathedral in Memphis, Tennessee, created by Len R. Howard, mid-20th Century. Note the early-mid 20th Century clothing styles of the parents and godparents. Photo: Gary Bridgman 2006 https://commons.wikimedia.org/wiki/File:Stained_glass_window_depicting_Episcopal_baptism.JPG

The Neri Godparents (13 May 2016):
Guido Reni (1575–1642), St Joseph with the Infant Jesus (c. 1635), at the Hermitage, in St. Petersburg. Oil on canvas. Courtesy of Wikipedia: http://en.wikipedia.org/wiki/File:Saint_Joseph_with_the_Infant_Jesus_by_Guido_Reni,_c_1635.jpg

Supplemental Twitter illustration: (12 May 2016):
Neri Chapel, Santa Maria Maddalena dei Pazzi, Borgo Pinti, 58, Florence, Italy. Photo by Paul Engle 2011

The Neri Chapel (11 May 2016):
The Vision of St Bernard (c. 1598), by Pietro Perugino (1448–1523). Current location: The Pinakothek Museums in the Kunstareal Munich. Image courtesy of Wikipedia http://it.wikipedia.org/wiki/File:Perugino,_apparizione_della_vergine_a_san_bernardo,_monaco.jpg

Supplemental Twitter illustration: (10 May 2016):
Main entrance (detail) of Casino di San Marco, Florence, Italy Photo by  "Sailko" 2007, via Wikimedia https://commons.wikimedia.org/wiki/File:Casino_di_san_marco,_scimmietta.JPG

Casino di San Marco (9 May 2016):
Courtesy of ARCHIDIS - Fondo disegni tecnici del Comune di Firenze. Direction de Toscana place de Florence. Coupe du casin de S. Marc, prise sur la ligne. Cart. 5 tavola 1. sul retro: classe 1° Casino di S. Marco. n. 3 piante del casino della Livia - cav. Mazzei. Amfce 0533 (cass. 16 ins. A2). (http://opac.comune.firenze.it/).

Weekly Recap (8 May 2016): Giuseppe Maria Mitelli, "the glassblower" 1698. A glass worker is blowing a model of the figure of Peace, accompanied by the inscription which translates: I am made of glass and the son of breath. Four characters watch, Identifiable by their dress as Spanish, French, English and German. http://www.gettyimages.com/detail/illustration/the-glass-blower-by-giuseppe-maria-mitelli-engraving-stock-graphic/142453999

Supplemental Twitter illustration: (7 May 2016): Collection of stones in Ticino, Italy http://www.1001storia.polimi.it/meusGEN/meuslive.php?projectid=145&pageid=6231&navigation=long_loop&language=it-it&template=policultura&device=dynamic_html&public=1

Pebbles from Pavia (6 May 2016):
William Pars (1742‑1782) “A Bridge on the River Ticino, near Polleggio” c.1770. Graphite and watercolour on paper Image courtesy  of the Tate Museum, London.  http://www.tate.org.uk/art/artworks/pars-a-bridge-on-the-river-ticino-near-polleggio-t08276

Supplemental Twitter illustration: (5 May 2016): Glass chemistry color chart  courtesy of http://www.compoundchem.com/2015/03/03/coloured-glass/

Glass from Tinsel ( 4 May 2016):
From Denis Diderot's Encyclopedia, machinery to hammer brass into thin sheets. Volume 23, fig 13, plate 4. http://artflx.uchicago.edu/images/encyclopedie/V23/plate_23_13_4.jpeg

Supplemental Twitter illustration: (3 May 2016): So-called "wine diamonds", naturally occurring potassium tartrate crystals on a cork.  http://vinsanity-vino.blogspot.com/2010/01/wine-diamonds.html

Scraping the Barrel (2 May 2016):
4th century BCE philosopher Diogenes, “Alexander and Diogenes” 1792
painting by Gaetano Gandolfi (1792). Image courtesy of Wikimedia Commons: http://commons.wikimedia.org/wiki/File:Gaetano_Gandolfi_-_Alexander_and_Diogenes.jpg

Weekly Recap (1 May 2016): The Boston & Sandwich Glass Company, c1835 http://wickedyankee.blogspot.com/2013/03/the-boston-sandwich-glass-company.html

April 2016
Supplemental Twitter illustration: (30 April 2016): Goblet, Brandenburg (Germany), Potsdam probably engraved by Gottfried Spiller about 1690-1700. Image courtesy of Corning Museum of Glass  http://www.cmog.org/article/gold-ruby-glass

Rosichiero Glass (29 April 2016):
Venice Sunset, Artist unknown, courtesy of "free wallpaper" at http://www.artworkslimitededitions.co.uk/desktopwallpaper.php - Please contact me if you know the artist.

Excellent presentation on color by the University of Oslo:
http://www.uio.no/studier/emner/matnat/kjemi/KJM3100/v07/undervisningsmateriale/kjm3100_2007_09_colour_b.pdf

Supplemental Twitter illustration: (28 April 2016): Cobalt ore as mined, against "cobalt blue" background, courtesy of wikipedia https://en.wikipedia.org/wiki/Cobalt#/media/File:Cobalt_OreUSGOV.jpg

Zaffer: (27 April 2016) Antique Apothecary Pharmacy Bottles Cobalt Blue https://www.pinterest.com/pin/258605203572745183/

Supplemental Twitter illustration: (26 April 2016): Palazzo Della Gherardesca, the former residence of the Archbishop of Florence on Borgo Pinti, now the Four Seasons Hotel  https://www.flickr.com/photos/technogym/4941758911

Borgo Pinto (part 2) (25 April 2016):
Palazzi Ximenes panciatichi da sangallo, courtyard. Photo by “Sailko”, courtesy of Wikipedia: http://it.wikipedia.org/wiki/File:Palazzo_ximenes_panciatichi_da_sangallo,_cortile_01.JPG


Weekly Recap (24 April 2016): Window with the papal emblem of Clement VII, Laurentian Library, Florence, Italy. http://blog.fotodartefirenze.it/index.php/it/component/k2/itemlist/tag/daniele%20angellotto

Supplemental Twitter illustration: (23 April 2016): Litografia di un disegno di L. Gelati raffigurante Porta a Pinti ( AMFCE, 8502 ). Courtesy of Archivio Storico del Comune di Firenze http://wwwext.comune.fi.it/archiviostorico/narratives/000004/000005.html

Borgo Pinti (22 April 2016):
Palazzo Marzichi Lenzi, Florence. Photo by “Sailko”, courtesy of Wikipedia: http://it.wikipedia.org/wiki/File:Palazzo_Marzichi_lenzi_01.JPG

Supplemental Twitter illustration (21 April 2016): Portrait of Don Antonio de' Medici, 1618, Theodor Kruger. Burin engraving, Florence, Museo Galileo, acquisition no. SD B 384  http://link.springer.com/chapter/10.1007/978-3-319-05065-2_6 and http://www.jessewaugh.com/blog/2012/12/30/art-and-alchemy-exhibition-at-the-uffizi

Don Antonio de’ Medici (20 April 2016):
Frontispiece from Pierfilippo Covoni, Don Antonio de' Medici Al Casino Di San Marco, Firenze, 1892. Image from personal collection of Paul Engle. There is a public domain copy here: http://books.google.com/books?id=5-sVAAAAYAAJ

Supplemental Twitter illustration (19 April 2016): Frontispiece from Ricettario Fiorentino 1597 ed, by Neri di Jacopo Neri, Giovan Battista Benadù, Francesco Rosselli and Giovanni Galletti. Courtesy of Wellcome Trust. http://wellcomeimages.org/indexplus/result.html?*sform=wellcome-images&_IXACTION_=query&%24%3Dtoday=&_IXFIRST_=1&%3Did_ref=M0011854&_IXSPFX_=templates/t&_IXFPFX_=templates/t&_IXMAXHITS_=1

Archiater (18 April 2016):
Ceiling panel of entrance vestibule, 27 Borgo Pinti, Florence. Neri family coat of arms. Photo by Paul Engle, 2011.

Weekly Recap (17 April 2016): Enameled  Goblet, Venetian or Franco-Syrian. circa 1300,CE "Glass", by Edward Dillon, New York: Putnam, 1907  http://www.hellenicaworld.com/LX/Literature/EdwardDillon/en/Glass.html

Supplemental Twitter illustration (16 April 2016): Denis Diderot 1772. Recueil des planches sur les sciences, les arts libéraux, et les arts mechaniques : avec leur explication, v. 10, ch 27, plate 13. Paris : Briasson, 1772.

Washing Molten Glass (15 April 2016):
Washing, sorting and carrying cullet, from Denis Diderot 1772. Recueil des planches sur les sciences, les arts libéraux, et les arts mechaniques : avec leur explication, v. 10, plate 16. Paris : Briasson, 1772. Image courtesy of Corning Museum of Glass, featured (fig.3) in “Breaking the Glass Ceiling: Women Working with Glass,” http://www.cmog.org/article/breaking-glass-ceiling-women-working-glass

Supplemental Twitter illustration (14 April 2016): Title page from Antonio Neri's 1612 book L'Arte Vetraria [the art of glassmaking] http://www.cmog.org/library/larte-vetraria-distinta-libri-sette-del-rp-antonio-neri-fiorentino

Eyes of a Lynx (13 April 2016):
The seal of the Academia dei Lincei. Courtesy of Accademia dei Lincei, Palazzo Corsini - Via della Lungara, 10, Rome. http://www.lincei.it/

Supplemental Twitter illustration (12 April 2016): Jacopo Ligozzi,1518,  fanciful glass vessels, ink and watercolor on paper. Galleria degli Uffizi. http://www.atlantedellarteitaliana.it/artwork-12537.html

Cross Pollination (11 April 2016):
The art of stonework, from MS Ferguson 67, f. 7r, (1598-1600)
Antonio Neri. Courtesy of University of Glasgow Library, Special Collections. http://www.gla.ac.uk/services/specialcollections/ordercopiesimages/#d.en.129979

Weekly Recap (10 April 2016): A twenty sided (icosahedral) second century Roman glass die, used in gambling http://www.spiegel.de/fotostrecke/rollenspiel-geschichte-die-drachenwuerfel-fotostrecke-50712-12.html

Supplemental Twitter illustration (9 April 2016): A "fire" salamander, Mount Olymnpus National Park, Greece, Photo by Cristo Vlahos, 2010 https://en.wikipedia.org/wiki/Salamander

Salamander (8 April 2016):
Michael Maier, Atalanta fugiens, hoc est, Emblemata Nova de Secretis Naturae Chymica... (Oppenheim: Johann Theodori de Bry, 1617), emblem 29.

Supplemental Twitter illustration (7 April 2016): The four elements in alchemy are portrayed in Johann Daniel Mylius’ Philosophia reformata (1622) as representing the four stages of the alchemical opus. From left to right are earth, water, air and fire.

Primordial Matter (6 April 2016)
Mining practices, from Georgius Agricola (Georg Bauer), De Re Metallica 1556, Image courtesy of University of Arizona Mineral Museum. http://www.uamineralmuseum.org/exhibits/demonmonier/rare-book-collection/  (1540 ed is here: http://books.google.com/books?id=PUo8AAAAcAAJ )

Supplemental Twitter illustration (5 April 2016):  Ruins of the paper mill at Pescia, Italy © All Rights Reserved by brezza, 2004.  http://www.panoramio.com/photo/5211031

Sonnet to a Barber (4 April 2016):
Bust portrait of Luigi [Lodovico?] Domenechi facing right set within an elaborate cartouche Engraving. Italian, 'Medaglia del [Antonio Francesco]Doni' print made by: Enea Vico, 1550-1564.  Courtesy of  the British Museum, inventory #1867,1012.650. http://www.britishmuseum.org/research/collection_online/collection_object_details/collection_image_gallery.aspx?assetId=66638&objectId=1501580&partId=1

Weekly Recap (3 April 2016):   Delicate wine glass in Georges de La Tour (1593–1652)
The Cheat with the Ace of Diamonds,  (detail). (C) RMN / Gérard Blot, http://art.rmngp.fr/fr/library/artworks/georges-de-la-tour_le-tricheur-a-l-as-de-carreau_perle-objet_huile-sur-toilePhoto

Supplemental Twitter illustration (2 April 2016): Blätter des Manns Walfarn, by Alois Auer, Vienna: Imperial Printing Office, 1853. Courtesy of the Wikimedia foundation: Nature print, (http://en.m.wikipedia.org/wiki/File:Nature_print,_Alois_Auer_.jpg).

Laughing In the Fern (1 April 2016):
Allain Manesson Mallet  1719, "Der Mont. – Lune"

March 2016
Supplemental Twitter illustration (31 March 2016): Girandole earrings. Pink and white pastes, close set in silver. Probably French, early 18th century. Courtesy of http://www.alaintruong.com/archives/2010/06/20/18364662.html

Isaac Hollandus (30 March 2016):
Illustration from: Isaac J. Hollandus, Chymische Schriften, Vienna 1773. Earlier 1666 ed is here (p. 13) http://books.google.com/books?id=XFw6AAAAcAAJ

Supplemental Twitter illustration (29 March 2016): Glass , Pitchers Glasses Sets, 1900, Crystal 2 3, 380662922003 Pt, Venetian Murano ewer, latticino and aventurine glass, dragon shape handle, Salviati or Barovier 1880's https://www.pinterest.com/laurapadoan1/salviati/

Aventurine (28 March 2016):
Classe VI, n. 3458. / Figure 5: Small amphora in aventurine glass with handles in “rigadin” decorated with colorless “morise”, Murano, Salviati doc.http://www.cairn.info/revue-archeosciences-2013-1-page-135.htm
(e verre aventurine (« avventurina ») : son histoire, les recettes, les analyses, sa fabrication, by Moretti, Gratuze, Hreglich.

Weekly Recap (27 March 2016):  Antique Russian Glass Easter Egg circa 1770.  http://romanovrussia.com/antique/museum-quality-glass-easter-egg/

Supplemental Twitter illustration (26 March 2016): Calcedony (calcedonio) blown glass beaker, European, 1700-1799, Corning Museum of Glass, bequest of Jerome Strauss acc# 79.3.487  http://www.cmog.org/article/antonio-neri-alchemist-glassmaker-priest

Chalcedony Glass Reprise (25 March 2016):
Ribbed vessel, chalcedony glass, seventeenth century, 20 cm.
Collection of the  Museo del Monastero di Santa Giulia, Brescia
Courtesy of Fondazione Marilena Ferrari. http://www.atlantedellarteitaliana.it/artwork-1479.html

Supplemental Twitter illustration (24 March 2016): The young Queen Elizabeth I (here in about 1563) liked to wear bright reds, before she adopted the more sober image of the "Virgin Queen". Her satin gown was probably dyed with kermes. Steven van der Meulen (fl. 1543–1568) - Scanned in the US from Sotheby's Catalogue #L07123,  https://en.wikipedia.org/wiki/Red#/media/File:Elizabeth_I_Steven_Van_Der_Meulen.jpg

Dyed In the Grain (23 March 2013)
Dyeing wool cloth, from "Des Proprietez des Choses", Bartholomaeus Anglicus, 1482. British Library Royal MS 15.E.iii, folio 269 Image via Wikimedia Commons http://commons.wikimedia.org/wiki/File:Dyeing_British_Library_Royal_MS_15.E.iii,_f._269_1482.jpg

Carries the Palm (21, 22 March 2016)
Assisi frescoes, entry into Jerusalem. Pietro Lorenzetti, 1320. Assisi, Lower Basilica, San Francesco, southern transept. Courtesy of Wikimedia Commons: http://commons.wikimedia.org/wiki/File:Assisi-frescoes-entry-into-jerusalem-pietro_lorenzetti.jpg

Saint Justina of Padua with a palm frond, Bartolo Montagna 1490s, oil on wood. Courtesy of The Metropolital Museum of Art,  Accession Number: 14.40.606. http://www.metmuseum.org/collections/search-the-collections/437145

Copper Sulfate (vitriol of copper), courtesy of  Wikimedia Commons: http://en.wikipedia.org/wiki/File:Copper_sulfate.jpg Photo by: ‘Stephanb’ http://de.wikipedia.org/wiki/Benutzer:Stephanb

Weekly Recap (20 March 2016): Late 19th century trade card showing mold blowing at the bocca (furnace opening). The Society for Historical Archaeology https://sha.org/bottle/glassmaking.htm  http://www.sha.org/bottle/Glassmaking/gatheringscene.jpg , personal collection of Wayne Wagar.

Supplemental Twitter illustration (19 March 2016): Sant'Agata Monastery (Via San Gallo, Florencce) Buonsignori map, 1594 https://it.wikipedia.org/wiki/Chiesa_di_Sant%27Agata_(Firenze)

The Sisters of Antonio Neri (18 March 2016): Portrait of the Egerton Sisters, Elizabeth, Vere and Mary Egerton; English School, c. 1601. http://amapx.tumblr.com/post/117259364400/jeannepompadour-portrait-of-the-egerton

Supplemental Twitter illustration (17 March 2016): German 1662 footed beaker with enamel deccoration. courtesy of Corming Museum of Glass  http://www.cmog.org/article/enameled-glass-vessels-1425-bce-1800-decorating-process

Rise and Fall (16 March 2016): “Merry Company,” 1623. Gerard van Honthorst (1590–1656),
Courtesy of Staatsgalerie im Neuen Schloss, Schleißheim, via Wikimedia commons. http://en.wikipedia.org/wiki/File:Honthorst,_Gerard_van_-_Merry_Company_-_1623.jpg

Supplemental Twitter illustration (15 March 2016): Dutch kitchen scene in Great Hall at Treasurer's House, York. By Beuckelaer, c.1530-73 https://www.pinterest.com/pin/490892428108875425/

Alchemy in the Kitchen (14 March 2015):
Antonio Neri, 1508-1600, Tesoro del Mondo, "Ars Preparatio Animalium”, MS Ferguson 67, f. 10r (detail). Courtesy of University of Glasgow Library, Special Collections. http://www.gla.ac.uk/services/specialcollections/ordercopiesimages/#d.en.129979

Weekly Recap (13 March 2016): La Galerie du Palais (c.1640). Etching by Abraham Bosse (1602–1676), showing a French woman bookseller (behind the counter of the stall at left). The neighboring stalls in this 17th-century version of a fashionable mall sell fans (center stall) and lace (stall at right). https://www.she-philosopher.com/gallery/booksellers.html

Supplemental Twitter illustration (12 March 2016): Pietro Longi, Portrait of the family Sagredo, circa 1752, courtesy of Wikimedia commons https://commons.wikimedia.org/wiki/File:Pietro_Longhi_053.jpg

Dianora Parenti (11 March 2016): Agnolo di Cosimo 'Bronzino,' "Portrait of Florentine Noblewoman" circa. 1540 Florence, (thought to be a cousin of Eleanor Toledo) Courtesy of  the San Diego Museum of Art. http://www.sdmart.org/

Supplemental Twitter illustration (10 March 2016): A facon de venise wine glass, collection of  Elisabeth & Theo Zandbergen; a miraculous survivor of the 17th-18th century.  https://ancientglass.wordpress.com/2016/02/16/a-pair-of-facon-de-venise-wine-glasses/

Sara Vincx (9 March 2016):
Detail from: Roses and an iris in a glass vase, crabs and prawns on a pewter platter, a Facon-de-Venise wineglass, a stoneware ewer, a bunch of grapes. By Alexander Adriaenssen b. 1587, Antwerp, d. 1661, Antwerp.

Supplemental Twitter illustration (8 March 2016): The Beguines' hospital of Malines in Mechelen, Belgium in the 19th century. Source unknown.

The Béguines of Mechelen (7 March 2016):
A Béguine of Antwerp, from Pierre Hélyot, L'Histoire des ordres monastiques… 1719 (v.8) Courtesy of Google Books: http://books.google.com/books?id=9DQGAAAAQAAJ

Weekly Recap (6 March 2016): Le Lion d'Or ou Vinaigre des Sages [The Golden Lion, or the Vinegar of the Wise] - De Goude Leeuw : The arrow of Sagittarius and the anchor of Neptune.  De goude leeuw, of Den asijn der wysen. Waer in ontallyke heerlyke konsten, Pieter Arentsz., 1671 etc.

Women in Alchemy: ( 4,5 March 2016):
Antonio Neri, "Libro intitulato Il tesoro del mondo di Pietre Antonio Neri" (MS Ferguson 67, GB 0247, Glasgow University Library, Special Collections, 1598-1600) f. 25r, 35r, 37r.

Caterina Sforza (2,3 March 2016): Portrait of Caterina Sforza, by Lorenzo di Credi (c.1463-1509)
Now in the Museum of Forlì (Pinacoteca Civica di Forlì, Italy)
Photo courtesy of: http://www.asn-ibk.ac.at/bildung/faecher/geschichte/maike/monalisa/genealogy/073.htm
Via Wikimedia Commons http://commons.wikimedia.org/wiki/File:Caterina_Sforza.jpg

Sandro Botticelli, Primavera (1498) Courtesy of Uffizi Gallery, Florence, via Wikimedia Commons http://commons.wikimedia.org/wiki/File:Botticelli-primavera.jpg (detail - rightmost of the three graces)

Supplemental Twitter illustration (1 March 2016): Antonio Neri, self Portrait, from Treasure of the World. 1598-1600, f.xxvii-v
(detail, enlarged and rotated). Courtesy of University of Glasgow Library, Special Collections. http://www.gla.ac.uk/services/specialcollections/ordercopiesimages/#d.en.129979

February 2016

Antonio Neri's Birthday (29 February 2016):
Neri Medallion, Specola, Florence (manipulated to remove parallax distortion, and correct color) Original courtesy of Wikimedia commons http://commons.wikimedia.org/wiki/File:Specola,_medaglione_di_antonio_neri.JPG

Supplemental Twitter illustration (28 February 2016): Glass cup excavated at Pompeii (79 CE) http://www.rebecca-east.com/artifacts.html

Supplemental Twitter illustration (27 February 2016): View of Castel Dell'Oro Naples, "Tavola Strozzi" (1472), attributed toFrancesco Rosselli - San Martino Museum in Naples https://it.wikipedia.org/wiki/Tavola_Strozzi. Detail Photo courtesy of Carl,  https://www.flickr.com/photos/70125105@N06/10506919956

Friar Mauritio (26 February 2016):Antonio Neri, Treasure of the World, "Brother Mauritio" detail from, f. 19r. Courtesy of University of Glasgow Library, Special Collections. http://www.gla.ac.uk/services/specialcollections/ordercopiesimages/#d.en.129979

Supplemental Twitter illustration (25 February 2016): 17th century with later additions. Culture: Italian (Milan), probably. Medium: Rock crystal, silver gilt, rubies. https://marinni.dreamwidth.org/642764.html?style=light

Glass or Rock? (24 February 2016):
Rock crystal ewer, Egypt(1000-1050), V&A Museum, #7904-1862, Photo via Wikimedia Commons  http://commons.wikimedia.org/wiki/File:Rock_crystal_ewer.jpg

Supplemental Twitter illustration (23 February 2016) A video of the reticello technique as executed by American glass artist Dante Maroni. http://www.youtube.com/watch?v=WJ3DDon23Lc

Reticello (22 February 2016):
Reticello by Aaron Tate http://www.aarontate.com/ , Photo (c) by David Lindes courtesy of David Lindes. http://www.flickr.com/photos/lindes/78440530/.

Borosilicate glass pendant flameworked in the style of reticello, by Adam Reetz 2015, photo courtesy of the artist. http://ink361.com/app/users/ig-658429654/photos

Supplemental Twitter illustration (21 February 2016): Manufactured during the later part of the 15th century on the occasion of the marriage between the Duke of Ferrara to an Estense noblewoman, it was called ‘Barovier’ in honor its Venetian maker. http://www.theflorentine.net/articles/article-view.asp?issuetocId=1686

Supplemental Twitter illustration (20 February 2016): Murano mezza filigrana glass, white caned vase and bowl. Barovier and Toso vase (18cm) and Mazzega bowl. https://www.antiquehelper.com/item/338043

Filigrana (19 February 2016):
Mezza Filigrana footed vase, circa 1950s, by Dino Martens (1894-1970) for Aureliano Toso. http://www.artnet.com/artists/dino-martens/past-auction-results

Flameworked filigrana style miniature vessels by Emilio Santini, Photo courtesy of the artist.

Supplemental Twitter illustration (18 February 2016): c1700 Engraved Bottle in Gold Ruby Glass with Metal Cap, Germany, possibly Potsdam, Nuremberg (engraving). CMOG #   2011.3.178 http://www.cmog.org/artwork/engraved-bottle-gold-ruby-glass-metal-cap

Gold Ruby Glass (17 February 2016):
A gold florin.(1347) Photo courtesy of Wikimedia commons http://commons.wikimedia.org/wiki/File:Fiorino_1347.jpg

Cranberry glass or Gold Ruby from the treasury chamber of the Wittelsbacher located in the Munich Residenz. 2010, Wikimedia foundation.(http://commons.wikimedia.org/wiki/File:Goldrubinglas_Schatzkammer_M%C3%BCnchen.jpg)

Supplemental Twitter illustration (16 February 2016): Roman glass hydria from Baelo Claudia (M.A.N. 1926-15-287),  Created: between 351 and 400 AD.  Museo Arqueológico Nacional (National Archaeological Museum of Spain) https://en.wikipedia.org/wiki/Glassblowing#/media/File:Roman_glass_hydria_from_Baelo_Claudia_(M.A.N._1926-15-287)_01.jpg

Early Modern Glass Furnace (15 February 2016): From "De re metallica", Agricola (Georg Bauer) 1556.
Georg Agricola, Zwölf Bücher vom Berg- und Hüttenwesen, übers. v. Carl Schiffner, Berlin 1928, S. 502 ff. Scanned by Bibliothek für Sozial- und Wirtschaftsgeschichte / Köln, http://www.digitalis.uni-koeln.de/ courtesy of Wikimedia Commons http://commons.wikimedia.org/wiki/File:Agricola-3.png

Supplemental Twitter illustration (14 February 2016): Purpurine elephant made by one of Fabergé's competitors, courtesy Sotheby's http://www.sothebys.com/content/sothebys/en/auctions/ecatalogue/2015/collections-silver-vertu-russian-art-n09409/lot.40.html

Supplemental Twitter illustration (13 February 2016): Saggi di Naturali Esperienze, Accademia del cimento, Firenze: 1666 p. 255/297 [1667] http://d3seu6qyu1a8jw.cloudfront.net/sites/default/files/collections/64/646D46D0-885F-465E-B9E7-D7466559FAAE.pdf

The Dukes Oil (12 February 2016):
Trajan's Column, Rome, Giovanni Battista Piranesi (1758), Hind 51iii(of vii). Etching and engraving, Plate 31 from the Vedute di Roma (Views of Rome). Courtesy of R. E Lewis and Daughter http://www.relewis.com/piranesi-trajans-column.html

Supplemental Twitter illustration (11 February 2016): Orto Botanico (botanical gardens) at Pisa Attribution of image unknown,  courtesy of http://www.italianbotanicalheritage.com/it/scheda.php?struttura=752

Botanical Gardens (10 February 2016):
Rudolf II as "Vertumnus" by the Milanese painter Giuseppe Arcimboldo. (c. 1590), http://en.wikipedia.org/wiki/File:Arcimboldovertemnus.jpeg

Supplemental Twitter illustration (9 February 2016): One of a pair of Tazzas, Leopoldo Bonafede,  Imperial Glassworks (Russian, c.1867) purpurine, gilded bronze, colored glass. http://art.thewalters.org/detail/77444/pair-of-tazzas/

Purpurine (8 February 2016):
1) Fabergé, St. Petersburg. Cherry Sprig. c.1900. The cherries are made of purpurine, the leaves are nephrite, the stalk, sprouting from its rock-crystal pot is made of gold.  Géza von Hapsburg: Fabergé, Imperial Craftsman and His World, London: Booth-Clibborn, 2000, p.117

2) Red Glass Beads, 1st cent. BCE, Tissamaharama, Sri Lanka. Rösch, Cordelia; Hock, Rainer; Schüssler, Ulrich; Yule, Paul; Hannibal, Anne. “Electron Microprobe Analysis and X-ray Diffraction Methods in Archaeometry: Investigations on Pre-Islamic Beads from the Sultanate of Oman” in: European Journal of Mineralogy, 9 (1997), 763–783. (Specifically, beads found at Tissamaharama, pp. 771,772). http://archiv.ub.uni-heidelberg.de/propylaeumdok/volltexte/2009/305

3) A small Medusa's head in opaque red glass made sometime in the first century AD Approximately one cm high and as wide, Corning Museum of Glass in NY. http://www.cmog.org/artwork/disk

4) Roman bowl in red opaque glass  sold at Christie's, London, 2010. A Roman opaque red glass patella cup (haematinon) c.1st cent. BCE/CE Sale#5488, lot 47.
http://www.christies.com/lotfinder/ancient-art-antiquities/a-roman-opaque-red-glass-patella-cup-5358311-details.aspx

5) Portrait of Roman mosaicist Michelangelo Barberi, 1809. Italian pencil, sanguine on paper http://www.rusmuseum.ru/eng/collections/drawing/photos

6)  One of a pair of Tazzas, Leopoldo Bonafede,  Imperial Glassworks (Russian, c.1867) purpurine, gilded bronze, colored glass. http://art.thewalters.org/detail/77444/pair-of-tazzas/

Supplemental Twitter illustration (7 February 2016): "The Doge of Venice visiting the glass factories of Murano, Italy", Les merveilles de l'industrie ou, Description des principales industries modernes / par Louis Figuier. - Paris : Furne, Jouvet, [1873-1877]. - Tome I image courtesy of
https://commons.wikimedia.org/wiki/File:%22Le_doge_de_Venise_visitant_les_verreries_de_Murano%22.jpg

Supplemental Twitter illustration (6 February 2016): Giacomo Farelli (1629–1706) Glorificazione di San Filippo Neri, drawing, pen and brown ink, black chalk, on cream laid paper. Courtesy of Google Art Project:  https://commons.wikimedia.org/wiki/File:Farelli,_Giacomo_-_Glorification_of_St._Filippo_Neri_-_Google_Art_Project.jpg

Cousin Philip Neri (5 February 2016):
Saint Philip Neri, attr. unknown, prob. after Giovanni Francesco Barbieri (Il Guernico), 1565 (http://en.wikipedia.org/wiki/File:Guercino_San_Filippo_Neri._San_Marino.JPG)Courtesy of Wikimedia commons http://commons.wikimedia.org/wiki/File:FNeri.gif

Supplemental Twitter illustration (4 February 2016):  Hankerchief vase by Paolo Venini  http://www.treadwaygallery.com/ONLINECATALOGS/Sept2004/0851-0900.html

Alberico Barbini
A section from a larger view of Venice with the island of Murano in the distance, circa 1600 attributed to Danckerts in the style of the famous woodcut print by Jacopo de’ Barbari circa 1500. http://drawingdetail.tumblr.com/post/21644545773/a-section-from-a-larger-view-of-venice-with-the


Incalmo (1,2 February 2016):
Tapio Wirkkala for Venini: Incalmo Bolle,  http://designgush.com/2011/03/30/tapio-wirkkala-for-venini-incalmo-bolle-copy/

Murano. 'A canne di filigrana ed incalmo' plate, 16th century. D. 28.3 cm. Clear glass, fused clear glass rods, opaque white threads and spirals. http://www.liveauctioneers.com/item/30038985_a-canne-di-filigrana-ed-incalmo-plate-16th-century

http://www.metmuseum.org/toah/works-of-art/08.138.2 From www.metmuseum.org - Abbasid period (750–1258), 9t–10th century Iraq or Syria. Glass, greenish yellow, blown in two parts, impressed with tongs

January 2016 
Supplemental Twitter illustration (31 January 2016): Miniature from ‘Sir John Mandeville’s Travels’, probably in Bohemia, early15th-century. This painting shows the whole glassmaking process. https://content.historicengland.org.uk/images-books/publications/iha-glassworks/M_and_EPM_Glassworks_IHA_final.pdf/

Iron into Copper: (29-30 January 2016): Recovering and concentrating Vitriol from a mining operation in the 16th century, from Agricola, De Re Metalica (1580) http://www.chokier.com/IMAGES/ROCHER/Agricola-De_re_metallica-Couperose.jpg

Supplemental Twitter illustration (28 January 2016): Giovanni Stradano or Jan Van der Straet, Alchemists in the Uffizi 1571, from the Studiolo of Francesco de' Medici. https://en.wikipedia.org/wiki/Stradanus

The Golden Sun (27 January 2016) The Sun, Robert Fludd from Utriusque Cosmi (1617),v. 2, p. 19.

Supplemental Twitter illustration (26 January 2016): Ancient Roman mirror, image courtesy of  Ancient Roman Goods  http://www.ancientromangoods.com/wp-content/uploads/2010/11/mirror.jpg

What Goes Around Comes Around (25 January 2016): Map of Ulm, Germany, Ulm - "Ulma Imperialis in Sueuia urbs, fortissimo aquae et muror ambitu, magnifico templo, et Danubij propiquitate illustris."  Georg Braun & Franz Hogenberg 1570-78. Copper engraving, original color in outline and wash. 107 by 470mm (4¼ by 18½ inches). B&H Vol. I. #31  https://www.bergbook.com/images/21441-01.jpg

Supplemental Twitter illustration (23 January 2016): Oswald Croll (1563-1609), Alchemical emblems  http://dolorosa-reveries.blogspot.com/2011_09_01_archive.html

Supplemental Twitter illustration (23 January 2016): Conspicilla (Spectacles)—detail, Jan van der Straet (Giovanni Stradano), Florence, c.1591. Engr. Jan Collaert (II), Pub., Philips Galle.

CONCIATORE Book Excerpt (22 January 2016): Book cover image on background of Florence, Italy, with Independent Authors Network finalist award seal.

Supplemental Twitter illustration (21 January 2016): "The Discovery of Glass" Giovan Maria Butteri, from The Studiolo of Francesco de' Medici.c.1572  (no. 27 in below link). http://museicivicifiorentini.comune.fi.it/en/palazzovecchio/visitamuseo/studiolo_francesco_i.htm

Like Snow from Heaven (20 January 2016):
28th December 2005 in Florence (Photo by Marco De La Pierre), Image © Florencephotos.com [info@florencephotos.com] [http://www.florencephotos.com] Firenze, Italy 1999-2010.

Mirror, Mirror (18,19 January 2016):
Jan van Eyck, The Arnolfini Portrait (1434), National Gallery, London, courtesy of Wikipedia, http://en.wikipedia.org/wiki/File:Van_Eyck_-_Arnolfini_Portrait.jpg
Detail of same.

Supplemental Twitter illustration (17 January 2016): A section from a larger view of Venice with the island of Murano in the distance, circa 1600 attributed to Danckerts in the style of the famous woodcut print by Jacopo de’ Barbari circa 1500.  http://venice11.umwblogs.org/the-history-of-glass-in-murano/

Supplemental Twitter illustration (16 January 2016): (Better quality images) 16th century miniature of Aleppo (Halep) , Syria, by Matrakçi Nasuh (cir.1480-1564). https://storify.com/HistoryNeedsYou/art-and-cartography-of-matrakc-nasuh  Matthew Ward @HistoryNeedsYou

Supplemental Twitter illustration (15 January 2016): 16th century miniature of Aleppo (Halep) , Syria, by Matrakçi Nasuh (cir.1480-1564). http://ankaraolgunlasma.meb.k12.tr/tema/icerikler/matrakci-nasuh_1564182.html

Neri's Aleppo Connection (15 January 2016):
Drummond, Alexander (1754), Travels through different cities of Germany, Italy, Greece, and several parts of Asia, as far as the banks of the Euphrates (London: Printed by W. Strahan for the author, 1754) OCLC 1319396, http://openlibrary.org/books/OL6953903M/Travels_through_different_cities_of_Germany_Italy_Greece_and_several_parts_of_Asia_as_far_as_the_ban Artist unknown, Image courtesy of Wikimedia: http://commons.wikimedia.org/wiki/File:1754_Aleppo_Drummond.png

Supplemental Twitter illustration (14 January 2016): Léonard Limosin, Allegory of Catherine de' Medici as Juno, French, 1573, Polychrome enamel  on copper and silver. Courtesy Getty Museum http://search.getty.edu/museum/records/musobject?objectid=1340

Enamel (13 January 2016): Enameled Pendant, Pope Gregory IX, attr. Italian, mid 17th  c.
Mid Seventeenth century double sided enameled pendant. On one side with the image of Pope Gregory IX on the other side St Ambrosius. Probably Italian ca 1650. via https://www.pinterest.com/pin/75716837458523173/

Supplemental Twitter illustration (12 January 2016): "Apparatus to Attract the Lunar Humidity" Manly Palmer Hall collection of alchemical manuscripts, 1500-1825, Box 18, MS 102, v.10. Getty Research Institute,  https://commons.wikimedia.org/wiki/File:Manly_Palmer_Hall_collection_of_alchemical_manuscripts,_1500-1825_(1600)_(14597513437).jpg

Alchemical Glassware (11 January 2016): Alchemical glassware. Antonio Neri (1576-1612), "Libro intitulato Il tesoro del mondo" MS Ferguson 67, GB 0247, Glasgow University Library, Special Collections, 1598–1600. f. 38.

Supplemental Twitter illustration (10 January 2016): Denis Diderot’s Encyclopédie, Paris,1751-1772.  Making Plate Glass
http://www.cmog.org/sites/default/files/images/Rakow_1000074995_CMYK-apd.jpg

Supplemental Twitter illustration (9 January 2016): Evangelista Torrecelli's experiments in Florence, by Gaspar Schott "Technica Curiosa" Wurzburg, 1664 -image from 1687 ed., p.205 here:  books.google.com/books?id=zkpAAAAAcAAJ

Torricelli and Glass (8 January 2016):
Evangelista Torricelli by Lorenzo Lippi (circa 1647, Galleria Silvano Lodi & Due), courtesy of Wikimedia commons http://commons.wikimedia.org/wiki/File:Evangelista_Torricelli_by_Lorenzo_Lippi_(circa_1647,_Galleria_Silvano_Lodi_%26_Due).jpg

Supplemental Twitter illustration (7 January 2016): Portrait of Michel Eyquem de Montaigne (1533-92) (oil on canvas), French School, (17th century) / Private Collection / Giraudon / The Bridgeman Art Library http://www.allposters.com/-sp/Portrait-of-Michel-Eyquem-de-Montaigne-Posters_i1736348_.htm

Michel Montaigne (6 January 2016):
Portrait of Michel Montaigne Anonymous (17th century), based on Kerkado (ca. 1580) http://www.qotd.org/quotes/Montaigne

Supplemental Twitter illustration (5 January 2016): courtesy of the American Ceramics Society http://ceramics.org/ceramic-tech-today/video-glass-science-of-prince-ruperts-drop-captured-with-high-speed-cameras

Thomas Hobbes on Glass (4 January 2016):
Thomas Hobbes portrait, by  John Michael Wright, 17th cent.  Courtesy of National Portrait Gallery: NPG 225, via Wikimedia commons  http://commons.wikimedia.org/wiki/File:Thomas_Hobbes_(portrait).jpg

Supplemental Twitter illustration (3 January 2016): Glass seal of Swedish Queen Hedvig Eleonora (Queen Dowager, after Carl XI) 1670s. Stamp Diameter 37 mm. http://precisensan.com/antikforum/showthread.php?2298-Glas-sigill-p%E5-och-fr%E5n-flaskor-Fr%E5gor/page5

Supplemental Twitter illustration (2 January 2016): Image from ‘Account of the Glass Drops’ by Robert Moray, 17 August 1661. Royal Society Classified Papers Cl.P/3i/57  Courtesy of http://blogs.royalsociety.org/history-of-science/2014/02/24/prince-ruperts-drops/

Hooke's Tears (1 January 2016):
From Micrographia, by Robert Hooke, 1664. Detail of illustration between pages 10, 11.
http://archive.org/stream/mobot31753000817897#page/32/mode/2up

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