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 2017

December 2017
Supplemental illustration (30 December 2017): 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 Reluctant Glassmaker (29 December 2017): The Sun, Robert Fludd from Utriusque Cosmi (1617),v. 2, p. 19.

Supplemental illustration (28 December 2017) Quentin Massys, 1466–1530. “Der Goldwäger und seine Frau”, 1514. Courtesy Musée du Louvre, Paris. http://www.akg-images.de/archive/Der-Goldwager-und-seine-Frau-2UMDHU1USH2O.html

Reflections on the Mirror (27 December 2017) 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 (26 December 2017): North Italian apothecary's shop in a Hebrew manuscript of the Canon Medicinae of Avicenna, c. 1450-75. Bibliotheca Universitaria, Bologna, Italy, MS 2197, fol. 492. Courtesy of  http://www.alchemywebsite.com/Equipment_Pharmacies_manuscript.html

The Kabbalah (25 December 2016):
Kabbalistic Sephiroth Tree, from Portae Lucis, Paulus Ricius (Trans. of “Shaare ora” by Joseph Gikatilla) Augsburg, 1516.

Supplemental illustration (23 December 2017): Mater Dolorosa, Titian, 1554  Museo del Prado, Madrid, Spain. (The Virgin Mary in a robe painted with precious ultramarine pigment)  https://commons.wikimedia.org/wiki/File:Mater_Dolorosa_by_Titian.jpg

Ultramarine Blue (22 December 2017):
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

Conciatore (20, 21 December 2017): 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 illustration (19 December 2017): "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 (18 December 2017):
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.

Supplemental illustration: (16 Secember 2017) Medieval era enamel beaker once owned by Piero de' Medici, Metropolitan Museum of Art, The Cloisters, New York. http://joelgarten.com/blog/?p=171

Enamel (15 December 2017): 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 illustration (14 December 2017): 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 (13 December 2017):
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


Supplemental illustration (12 December 2017): "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 December 2017): 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 (9 December 2017): 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 December 2017):
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 illustration (7 December 2017): Portrait of Michel Eyquem de Montaigne (1533-92) (oil on canvas), French School, (17th century) / Private Collection, a copy of an original dated to Montaignes 1580-81stay in Italy.  http://www.sothebys.com/en/auctions/ecatalogue/2008/books-manuscripts-and-photographs-including-nine-manuscripts-by-andre-breton-from-the-simone-collinet-collection-pf8005/lot.15.html

Michel Montaigne (6 December 2017):
Portrait of Michel Montaigne Anonymous (17th century), based on Kerkado (ca. 1580) http://www.qotd.org/quotes/Montaigne

A Philosophical Explosion (4, 5 December 2017): 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 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

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/

Supplemental illustration (2 December 2017): 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 December 2017):
From Micrographia, by Robert Hooke, 1664. Detail of illustration between pages 10, 11.
http://archive.org/stream/mobot31753000817897#page/32/mode/2up

November 2017
Supplemental illustration (30 November 2017):  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 (29 November 2017):
The studiolo of Francesco de' Medici, Palazzo Vecchio, Florence. Photo courtesy of http://static.digischool.nl/ckv2/hof/Hofcultuur3/studiolo.htm

Supplemental illustration (28 November 2017): 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 (27 November 2017)
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 illustration (25 November 2017): Two alchemists seeming to produce gold from a furnace; the accompanying text satirises those who pursue alchemy for gold alone. Engraving by C. Weigel, 1698.
Courtesy Wellcome Library collection http://catalogue.wellcomelibrary.org/record=b1195049

Sal Ammoniac (24 November 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

Supplemental illustration (23 November 2017): 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 (22 November 2017):
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 illustration (21 November 2017): 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 (20 November 2017):
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 illustration (18 November 2017): 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 (17 November 2017):
“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 illustration (16 November 2017): 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 (15 November 2017):
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

Supplemental illustration (14 November 2017): A modern take on traditional trade beads by American flamework artist  Harold Williams Cooney. Photo by artist. @AmericanBeads

Glass Beads (13 November 2017):
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 illustration (11 November 2017): 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 (10 November 2017):
“Roma,” Antonio Neri, from Tesoro del Mondo (Neri 1598–1600), Courtesy of University of Glasgow Library, Special Collections.

Supplemental illustration (9 November 2017): 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 (8 November 2017):
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 illustration (7 November 2017): Rummer with Raven's Head Seal, (detail) Savoy Glasshouse, George Ravenscroft, London 1676-1678 Corning Museum of Glass Acc.# 50.2.2  https://www.cmog.org/artwork/rummer-ravens-head-seal

Lead Crystal (6 November 2017):
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/

Supplemental illustration (4 November 2017): Geological vein of gold courtesy of Geology In blog https://www.geologyin.com/2014/11/veins-and-hydrothermal-deposits.html

Veins of the Earth (3 November 2017): 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.

Supplemental illustration (2 November 2017): 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

The Knights (1 November 2017):
Michelangelo Caravaggio, “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

October 2017
Supplemental illustration: (31 October 2017): Michelangelo Caravaggio, Jupiter, Neptune and Pluto, c. 1597. Casino Ludovisi. Courtesy of Wikipedia: http://en.wikipedia.org/wiki/Jupiter,_Neptune_and_Pluto

Alchemist Cardinal (30 October 2017):
Ottavio Leoni Portrait of Francesco Maria del Monte (1578–1630). Courtesy of Wikimedia Commons. http://en.wikipedia.org/wiki/Ottavio_Leoni

Supplemental illustration (28 October 2017): 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 (27 October 2017):
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 illustration (26 October 2017):  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/paracelsus-physician-and-alchemist-2/

The Paracelsans (25 October 2017):
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 illustration (24 October 2017): 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 (23 October 2017): 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

Supplemental illustration (21 October 2017): "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

Confessor to an Alchemist  (20 October 2017):
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 illustration (19 October 2017): 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 (18 October 2017):
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

Suplemental illustration (17 October 2017): 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 (16 October 2017):
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

San Giovanni (13 October 2017):
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 illustration: (12 October 2017): 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 (11 October 2017): 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 illustration: (10 October 2017): Title page of Index Librorum Prohibitorum (Venice 1564), courtesy of Wikipedia https://en.wikipedia.org/wiki/Index_Librorum_Prohibitorum

Neri and The Inquisition (9 October 2017):
Inquisition coat of arms, 1573. “EXURGE DOMINE ET JUDICA CAUSAM TUAM. PSALM. 73” [Rise Up, O Lord, and Judge Thine Own Cause!]. Enciclopedia Española. Courtesy of Wikimedia Commons. http://en.wikipedia.org/wiki/File:Escudo_inquisicion.gif

Supplemental illustration: (7 Oct. 2017): 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

Descendants of a Glassmaker  (6 October 2017):
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

Supplemental illustration: (5 October 2017): Gilded bronze mount with white marble and black glass eye. Courtesy of The Atkinson Museum, Southport, UK. @AtkinsonThe

Black is Beautiful (4 October 2017):
Black glass cameo vase, c. 1900, Thomas Webb. http://www.liveauctioneers.com/item/20750888_thomas-webb-black-cameo-glass-vase-c-1900

Supplemental illustration: (3 Oct.2017): 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! (2 October 2017):
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

September 2017
Supplemental illustration: (30 September 2017): 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 (29 September 2017):
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 illustration: (28 September 2017): 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 (27 Sept 2017)
Antonio Neri, "The Mineral Gold" Tesoro del Mondo,  (MS Ferguson 67, GB 0247, Glasgow University Library, Special Collections, 1598-1600), f. 5r.

Supplemental illustration: (26 Sept. 2017): Title page of Antonio Neri’s L’Arte Vetraria, 1612. Image courtesy of Google Books http://books.google.com/books?id=XcnYJuJpMbEC

Antonio Who? (25 Sept 2017):
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 illustration: (23 Oct. 2017): - One of the isolation cells in the Bargello Prison (Florence, Gabinetto Fotografico) Courtesy of http://www.edwardgoldberg.net/p/story-begins.html

The Duke's Mouthwash (22 Oct. 2017):
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

Supplemental illustration: (21 Sep. 2017): 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

The Blue Tower (20 Sept 2017):
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


Supplemental illustration: (19 Sept. 2017): The Museo del Vetro (Museum of Glass) is housed in the Palazzo Giustinian, the largest Baroque palace in Murano. Photo courtesy of http://www.aguidetovenice.co.uk/museo-del-vetro.htm

Don Giovanni (18 Sept. 2017):
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 illustration: (16 Sept. 2017): 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.

Art and Science (15 Sept. 2017): Jacopo Ligozzi,1518,  fanciful glass vessels, ink and watercolor on paper. Galleria degli Uffizi. http://www.atlantedellarteitaliana.it/artwork-12537.html

Supplemental illustration: (14 Sept. 2017): 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 (13 Sept. 2017):
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

Supplemental illustration: (12 Sept. 2017): 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 (11 Sept. 2017):
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 illustration: (9 Sept. 2017): 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 (8 Sept. 2017):
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 illustration: (7 Sept. 2017): 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 (6 Sept. 2017):
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 illustration: (5 Sept. 2017):The first edition of Hortus Sanitatis was printed by Jacob Meydenbach in Mainz, Germany in 1485, with a second edition in 1491 and a third in 1497. Shown is frontispiece of 1497 edition.  https://wikivisually.com/wiki/File:Ortus_1497_frontispice.jpg

A Band of Alchemists: (4 Sept 2017):
The Alchemist 1558, Pieter Brugle the Elder. British Museum, London, http://www.wikiart.org/en/pieter-bruegel-the-elder/the-alchemist

Supplemental illustration: (2 Sept. 2017): 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 (1 Sept. 2017):  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

August 2017
Supplemental illustration: (31 August 2017): 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

The Discovery of Glass (30 August 2017): 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 illustration: (29 August 2017): 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

Lapidaries in 1598 (28 August. 2017):
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 illustration: (26 August. 2017): Pieter Bruegel the Elder, The Alchemist (c.1558)

Alchemy in the Kitchen (25 August 2017):
Antonio Neri, 1598-1600, 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 illustration: (24 August 2017): 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: (23 August 2017): 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 illustration: (22 August 2017): 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

Lime (21 August 2017)
Vintage 1920's Water Glass Label. Photo credit: HelenLaRuse
https://www.etsy.com/listing/54253677/vintage-1920s-water-glass-label-egg

Supplemental illustration: (19 August 2017): 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 (18 August 2017)
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.

Supplemental illustration: (17 August. 2017): The alchemist (Adriaen Van Ostade) http://www.salvatorefiorillo.it/dailylife.html

The Dregs (16 August 2017):
"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 illustration: (15 August 2017): 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 (14 August 2017):
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 illustration (12 August 2017): Ponte Vecchio, Florence, Jacques Callot c. 1617 National Gallery of Art, Washington DC

Art and Science (11 Aug. 2017): Jacopo Ligozzi,1518,  fanciful glass vessels, ink and watercolor on paper. Galleria degli Uffizi. http://www.atlantedellarteitaliana.it/artwork-12537.html

Supplemental illustration (10 August 2017): 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 (9 August 2017): Portrait of Benjamin Franklin, lampworked glass murrina,
2016, by Stephen Boehme, Riverton, Utah. https://www.etsy.com/people/BoehmePottery

Supplemental illustration: (8 August 2017): 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 (7 August 2017): 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 illustration: (5 August 2017): 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 (4 August 2017): 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 illustration: (3 August 2017): 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 (2 August 2017): Peter Paul Rubens c. 1630,  “Abundance (Abundantia).” http://en.wikipedia.org/wiki/Abundantia

Supplementa illustration: (1 August 2017):
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

July 2017
Alberico Barbini (31 July 2017) - 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

Supplemental illustration: (29 July 2017): 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 (28 July 2017):
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 illustration: (27 July 2017): 
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 (26 July 2017)
Frontispiece woodcut from Zadith ben Hamuel De Chemia Senioris, 1566. See http://www.levity.com/alchemy/amclglr5.html

Supplemental illustration: (25 July 2017): 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

Sal Ammoniac (24 July 2017):
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

Supplemental illustration: (22 July 2017): 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 (21 July 2017):
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

Supplemental illustration (19 July 2017): Hematite Quartz from Orange River, Namibia. Hematite is a mineral form of iron oxide, here geologically intermixed in otherwise colorless quartz cristal, courtesy of https://commons.wikimedia.org/wiki/File:Hematite-Quartz-ckorqtz-34d.jpg

Crocus Martis (18 July 2017):
From Medicinisch-Chymisch- und Alchemistisches Oraculum, Ulm, 1755. Courtesy of The Alchemy Website, http://www.levity.com/alchemy/alchemical_symbols06.html

Purpurine (17 July 2017):
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: (15 July 2017) 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 (14 July 2017):
"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

Supplemental Twitter illustration: (13 July 2017): 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 (12 July 2017):
Image of two colored glass discs in green and magenta. Paul Engle, 2013, Photoshop.

Supplemental Twitter illustration: (11 July. 2017): 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 (10 July 2017):
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 illustration: (9 July 2017):
Weekly recap: Giambologna; Hall of Mirrors; Neri illustration:

"Portrait of Giamologna"by Hendrick Goltzius, Teylers Museum, courtesy of Wikimedia Commons. http://en.wikipedia.org/wiki/File:Goltzius-Bologna.png

Famous mirror room of the Golestan Palace, the former royal Qajar complex in Iran's capital city, is located in Arq Square in Tehran. http://historicaliran.blogspot.com/…/03/golestan-palace.html

Antonio Neri, MS Fergusin 67, 1598-1600, "The Art of Fire" 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/…/specialcollectio…/ordercopiesimages/….

Supplemental Twitter illustration: (8 July 2017): 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 (7 July 2017):
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 illustration (6 July 2017): Famous mirror room of the Golestan Palace, the former royal Qajar complex in Iran's capital city, is located in Arq Square in Tehran.  http://historicaliran.blogspot.com/2011/03/golestan-palace.html

Olearius on Glass (5 July 2017):
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 .

Supplemental Twitter illustration (4 July 2017):  Bronze statue of an Owl by the Flemish artist Giambologna (1529-1608) - Florence:Bargello Museum (Italy) http://wiki.cultured.com/people/Giambologna/

The Neighbors (3 July 2017):
"Portrait of Giamologna"by Hendrick Goltzius, Teylers Museum, courtesy of  Wikimedia Commons. http://en.wikipedia.org/wiki/File:Goltzius-Bologna.png

Supplemental Twitter illustration (1 July 2017): Turquoise glass goblet, Venetian, c1490, 19cm tall. British Museum collection. http://britishmuseum.tumblr.com/post/121113973422/turquoise-glass-goblet

June 2017
Turquoise Glass (30 June 2017):
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 (29 July 2017): 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 (28 June 2017):
Berkshire Glass Works cane from 1878. These were novelty items made by glass workers in off hours.  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/

Supplemental Twitter illustration (27 June 2017): 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 (26 June 2017):
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

Wkly blog recap (25 June 2017): 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 June 2017): 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. https://commons.wikimedia.org/wiki/File:Sainte-Foy,_chapelle_des_P%C3%A9nitents_blancs_de_Montpellier._Oculus_du_Saint-Esprit_symbole_de_la_Confr%C3%A9rie.jpg

Montpellier (23 June 2017):
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: (22 June 2017): Cardinal de Richelieu, Philippe de Champaigne 1641. courtesy of wikimedia  https://en.wikipedia.org/wiki/Cardinal_Richelieu#/media/File:Cardinal_de_Richelieu_mg_0053.jpg

Vitrum Flexile (21 July 2017: Roman Emperor Tiberius - Glass paste cameo c 20ACE by "Herophilos, Son of Dioskurides. Courtesy https://www.pinterest.com/pin/354799276865127678/

The Material of All Enamel: (19, 20 July 2017):
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

Supplemental illustration: Enameled Pendant, Pope Gregory IX, attr. Italian, 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/

Wkly blog recap (18 June 2017): Conciatore, The Life and Times of 17th Century Glass Maker Antonio Neri, by Paul Engle, pp. 394, ISBN: 978-0974352954 Winner IPPY gold medal.

True Colors (16, 17 June 2017)
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: (15 June 2017): Ottavio Leoni Portrait of Francesco Maria del Monte (1578–1630). Courtesy of Wikimedia Commons. https://en.wikipedia.org/wiki/Francesco_Maria_del_Monte

The Cardinal's Ceiling (14 June 2017)
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: (13 June 2017): 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

The Portland Vase (12 June 2017):
Portland Vase image courtesy of British Museum via Wikimedia commons: http://commons.wikimedia.org/wiki/File:Portland_Vase_BM_Gem4036_n4.jpg

Wkly blog recap (11 June 2017): 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 June 2017): 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 (9 June 2017): Giovanni Stradano, alias Jan van der Straet (1523-1605), "Alchemy Studio" (1570). Palazzo Vecchio (Studiolo), Florence. Courtesy of Uffizi/Palazzo Vecchio, Florence.

Supplemental Twitter illustration: (8 June 2017):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 (7 June 2017):
"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: (6 June 2017): 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 (5 June 2017): Antique gold finger Ring Arsi Rajasthan India http://www.ebay.com/itm/Rare-Vintage-antique-20-carat-Gold-finger-Ring-Arsi-Rajasthan-India-/380447781358

Wkly blog recap (4 June 2017): 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 June 2017): 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 (2 June 2017):
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/

Supplemental illustration (1 June 2017): The Hedwig beaker at the British Museum, may have originated in c17th Persia.  https://en.wikipedia.org/wiki/Hedwig_glass

May 2017
Travels To The East (31 May 2017):
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 (30 May 2017):  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 (29 May 2017):
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)

Wkly blog recap (28 May 2017): 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 (27 May2017): Title page of Lana Terzi's Prodromo, Courtesy of Internet Archives. https://ia700808.us.archive.org/zipview.php?zip=/4/items/olcovers598/olcovers598-L.zip&file=5980348-L.jpg

A Matter of Plagiarism (26 May 2017):
Francesco Lana Terzi (1631-1687), Courtesy of Wikimedia Commons (Italy). http://it.wikipedia.org/wiki/File:Lanadeterzi.jpg

Supplemental Twitter illustration: (25 May 2017): 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 (23 May 2017):
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 (22 May 2017): Antonio Neri, "L'Arte Vetraria…" (Firenze: Giunti, 1612), p. i. (title page) https://books.google.com/books?id=XcnYJuJpMbEC

A Deeper Accomplishment   (21 May 2017):  
From Antonio Neri, "Treasure of the World" MS Ferguson 67, f. 22r. Courtesy of University of Glasgow Library, Special Collections.

Supplemental Twitter illustration (20 May 2017): 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 (19 May 2017):
Spine of Agnolo della Casa, BNCF MS. Palatino 867 [756 - 21, 2.] Serie Targioni, II, v. 3. Courtesy of Biblioteca Nazionale Centrale di Firenze.

Supplemental Twitter illustration: (18 May 2017): Anton Raphael Mengs (1728-1779)  - Diligentia-Allegory of Drawing   Image courtesy of http://galeriidearta.blogspot.com/2014/03/anton-raphael-mengs-12-martie-1728-29_12.html More on Mengs at https://en.wikipedia.org/wiki/Anton_Raphael_Mengs

Diligence (17 May 2017): 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: (16 May 2017):
Neri Chapel, Santa Maria Maddalena dei Pazzi, Borgo Pinti, 58, Florence, Italy. Photo by Paul Engle 2011

The Neri Chapel (15 May 2017):
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


Antonio Neri's Mother (14 May 2017): 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: (13 May 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

Dear Friends (12 May 2017):
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.

Supplemental Twitter illustration: (11 May 2017):
Main entrance (detail) of Casino di San Marco, Florence, Italy. Macaque monkey over entrance embodies the playful spirit of discovery practiced inside. Photo by  "Sailko" 2007, via Wikimedia https://commons.wikimedia.org/wiki/File:Casino_di_san_marco,_scimmietta.JPG

Casino di San Marco (10 May 2017):
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/).

Supplemental Twitter illustration (9 May 2017): Paste gem and gold finger ring, 1600s, courtesy of The Museum of London, via https://www.pinterest.com/pin/76772368617930715/

Artificial Gems (8 May 2017):
Pendant, paste gems, Portugal ca. 1750. V&A acquisition nr.M.68-1962 http://collections.vam.ac.uk/item/O113043/pendant-unknown/

Wkly blog recap (7 May 2017): 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: (6 May 2017): So-called "wine diamonds", naturally occurring potassium tartrate crystals.  https://latinawineblogger.com/tag/wine-diamonds/

Scraping the Barrel (5 May 2017):
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

Supplemental Twitter illustration: (4 May 2017): Ticino paver stones in Pavia, Italy Photo courtesy of Kaanz photography,  www.facebook.com/kaanzphotography

Pebbles from Pavia (3 May 2017):
William Pars (1742‑1782) “A Bridge on the River Ticino, near Polleggio” c.1770. Graphite and watercolor 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: (2 May 2017): Glass chemistry color chart  courtesy of http://www.compoundchem.com/2015/03/03/coloured-glass/

Glass from Tinsel ( 1May 2017):
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

April 2017
Supplemental Twitter illustration: (29 April 2017): Palazzo Della Gherardesca, the former residence of the Archbishop of Florence on Borgo Pinti, now the Four Seasons Hotel  http://www.fourseasons.com/florence/accommodations/suites/royal_suite_della_gherardesca/

Borgo Pinto (part 2) (28 April 2017):
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

Supplemental Twitter illustration: (27 April 2017): 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 (26 April 2017):
Palazzo Marzichi Lenzi, Florence. Photo by “Sailko”, courtesy of Wikipedia: http://it.wikipedia.org/wiki/File:Palazzo_Marzichi_lenzi_01.JPG

Supplemental Twitter illustration (25 April 2017): Jacopo Ligozzi,1518,  fanciful glass vessels, ink and watercolor on paper. Galleria degli Uffizi. http://www.atlantedellarteitaliana.it/artwork-12537.html

Cross Pollination (24 April 2017):
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

Supplemental Twitter illustration: (22 April 2017): Stained glass window of Marc Chagall's work at the U.N. Image courtesy of https://en.wikipedia.org/wiki/File:UN_Glass.jpg

Zaffer: (21 April 2017) Antique Apothecary Pharmacy Bottles Cobalt Blue https://www.pinterest.com/pin/258605203572745183/

Supplemental Twitter illustration (20 April 2016): Portrait of Don Antonio de' Medici, 1618, Theodor Kruger. Burin engraving, Florence, Museo Galileo, acquisition no. SD B 384  

Don Antonio de’ Medici (19 April 2017:
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 (18 April 2017): 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 (17 April 2017):
Ceiling panel of entrance vestibule, 27 Borgo Pinti, Florence. Neri family coat of arms. Photo by Paul Engle, 2011.

Wkly blog recap (16 April 2017): Antique Russian Glass Easter Egg circa 1770  http://romanovrussia.com/antique/museum-quality-glass-easter-egg/

Supplemental Twitter illustration (15 April 2017): 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 (14April 2017)
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 )

Carries the Palm (12,13 March 2017)
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

Supplemental Twitter illustration (11 April 2017): 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 (10 April 2017):
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: (8 April 2017): American, circa 1909, A Tiffany Studios leaded glass and bronze lamp comprising a "salamander" design on a gilded bronze "bird skeleton" table base. Courtesy Lillian Nassau http://www.lilliannassau.com/catalogue/tiffany-studios-lamps/tiffany-studiossalamander-table-lamp/

Salamander (7 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: (6 April 2017): 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 (5 April 2017):
Venice Sunset, Artist unknown, courtesy of "free wallpaper" at http://www.artworkslimitededitions.co.uk/desktopwallpaper.php - Please contact me if you know the artist.

Supplemental Twitter illustration (4 April 2017):  Ruins of the paper mill at Pescia, Italy © All Rights Reserved by Paolo Landi (brezza), 2004.  http://www.panoramio.com/photo/5211031

Sonnet to a Barber (3April 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

Wkly blog recap (2 April 2017): excerpt of 'Glass' a poem by Henry Schoolcraft 1814, [critic].

Supplemental Twitter illustration (1 April 2017): 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).

March 2017
Laughing In the Fern (31 Marchil 2017):
Allain Manesson Mallet  1719, "Der Mont. – Lune"

Supplemental Twitter illustration (30 March 2017): Calcedony (calcedonio) blown glass beaker, European, 1700-1799, Corning Museum of Glass, bequest of Jerome Strauss acc# 79.3.487

Chalcedony Glass (29 March 2017):
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 (28 March 2017): 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 (27 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

Supplemental Twitter illustration (25 March 2017): Alchemical images from the Beinecke Library Jhoan Isaac Hollandus, 15th century Alchemical and Rosicrucian compendium, courtesy  rara1avis1.blogspot.com.

Isaac Hollandus (24 March 2017):
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 (23 March 2017): 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 (22 March 2017):
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.

Supplemental Twitter illustration (21 March 2017): Nef, or navicella. First half of 16th century, possibly by Arminia Vivarini.  Museo del Vetro, Murano, Venice Italy.  http://museovetro.visitmuve.it/it/il-museo/percorsi-e-collezioni/vetro-xv-xvi-xvii-secolo/

Arminia Vivarini (20 March 2017): Nef Ewer, Late 16th century, Murano Italy. Image courtesy of the Milwaukee Art Museum.

Wkly blog recap (19 March 2017): 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 (18 March 2017): Manna of St Nicholas flask, 17th century. A bottle for holy oil from his tomb in Bari, Italy.  Courtesy of St. Nicholas Center Museum & Art Gallery Images.

Rise and Fall (17 March 2017):
“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 (16 March 2017): 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 (15 March 2017): 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 (14 March 2017): 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 (13 March 2017): 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 (11 March 2017): 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 (10 March 2017):
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

Caterina Sforza (8-9 March 2017): 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 (7 March 2017): The Beguines' hospital of Malines in Mechelen, Belgium in the 19th century. Source unknown.

The Béguines of Malines (6 March 2017):
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 (5 March 2017): 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 (4 March 2017): 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 (3 March 2017):
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

Women in Alchemy ( 1 March 2017):
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.

February 2017
Supplemental Twitter illustration (28 February 2017): 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

Antonio Neri's Birthday (27 February 2017):
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 (25 February 2017): Orto Botanico (botanical gardens) at Pisa Attribution of image unknown,  courtesy of http://www.italianbotanicalheritage.com/it/scheda.php?struttura=752

Botanical Gardens (24 February 2017):
Rudolf II as "Vertumnus" by the Milanese painter Giuseppe Arcimboldo. (c. 1590), http://en.wikipedia.org/wiki/File:Arcimboldovertemnus.jpeg

Supplemental Twitter illustration: (23 February 2017): 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 (22 February 2017):
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

Supplemental Twitter illustration: (21 February 2017): Ottavio Leoni Portrait of Francesco Maria del Monte (1578–1630). Courtesy of Wikimedia Commons. http://en.wikipedia.org/wiki/Ottavio_Leoni

The Duke's Oil (20 February 2017):
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

Wkly blog recap (19 February 2017): 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 (18 February 2016): Plaque: Hercules Overcoming the Centaur Nessus, ca. 1570–80 Annibale Fontana (Italian, Milanese, 1504–1587) Rock crystal in enameled gold frame of later date . https://marinni.dreamwidth.org/642764.html?style=light

Glass or Rock? (17 February 2017):
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 (16 February 2017): 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 (15 February 2014):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 illustration (14 February 2017): (See: I. Lazar (2005) 'An Oil Lamp depicting a Roman Glass Furnace - a new find from Slovenia' in Instrumentum 22, Dec. 2005. The lamp itself is in the Pokrajinski Muzej Ptuj, Slovenia.) http://www.theglassmakers.co.uk/archiveromanglassmakers/furnace1.htm

Early Modern Glass Furnace (13 February 2017): 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

Wkly blog recap (12 February 2017): Conciatore, The Life and Times of 17th Century Glass Maker Antonio Neri, by Paul Engle, pp. 394, ISBN: 978-0974352954 Winner IPPY gold medal.

Gold Ruby Glass (10,11 February 2017):
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 (9 February 2017): Covered goblet decorated with the reticello technique. Probably Venice, late 17th–early 18th century. H. 27.7 cm, D. (cover) 9.5 cm. The Corning Museum of Glass (79.3.174, gift of The Ruth Bryan Strauss Memorial Foundation).  http://renvenetian.cmog.org/chapter/18th-century-decline

Reticello (8 February 2017):
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 (7 February 2017): Dino Martens (Italian, 1894–1970), vase in opaque white with black threads. Courtesy of Artnet auctions.

Filigrana (6 February 2017): 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.

Wkly blog recap (5 February 2017): 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 (4 February 2017): 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/

Fabergé and Purpurine (3 February 2017):
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 (2 February 2017):  Hankerchief vase by Paolo Venini  http://www.treadwaygallery.com/ONLINECATALOGS/Sept2004/modern/0874.jpg

Venini and Color (1 February 2017): Venini Murano Patchwork Vase of cylindrical to square tapering form. http://www.lawsons.com.au/asp/fullcatalogue.asp?salelot=7933+++++131+&refno=31020646

January 2017
Incalmo (30 January 2017): 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

Wkly blog recap (29 January 2017): 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 (28 January 2017): Ancient Roman mirror, with a relief on the back in silver showing Phrixus on the Golden Fleeced ram's back, fleeing to Colchis and carrying his sister Helle. From a tomb at Vetralla, Imperial period. Rome, Museo Massimo. Image courtesy of http://www2.cnr.edu/home/sas/araia/body.html

What Goes Around Comes Around (27 January 2017): 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 (26 January 2017): Spiral thermometer, Academia del Cimentro, mid 17th century, Flirence, Italy. Courtesy of Museo Galileo http://catalogue.museogalileo.it/object/SpiralThermometers.html

Transmutation of Iron (25 January 2017): 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 (24 January 2017): 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 (23 January 2017): The Sun, Robert Fludd from Utriusque Cosmi (1617),v. 2, p. 19.

Wkly blog recap (22 January 2017): 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 (21 January 2017): "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 2017):
28th December 2005 in Florence (Photo by Marco De La Pierre), Image © Florencephotos.com [info@florencephotos.com] [http://www.florencephotos.com] Firenze, Italy.

Supplemental Twitter illustration (19 January 2017): 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 (18 January 2017): Portrait of Michel Montaigne Anonymous (17th century), based on Kerkado (ca. 1580) http://www.qotd.org/quotes/Montaigne

Supplemental Twitter illustration (17 January 2017) Quentin Massys, 1466–1530. “Der Goldwäger und seine Frau”, 1514. Courtesy Musée du Louvre, Paris. http://www.akg-images.de/archive/Der-Goldwager-und-seine-Frau-2UMDHU1USH2O.html

Reflections on the Mirror (16 January 2017) 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.

Wkly blog recap (15 January 2017): 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 (14 January 2017):  JAIC 2003, Volume 42, Number 2, Article 7 (pp. 279 to 312). Conservation On Line. Detail, an example of champlevé enamel. French, Limoges, pyx, 13th century, enamel on copper, 9.5 × 6.9 cm. Walters Art Museum 44.252 http://cool.conservation-us.org/jaic/articles/jaic42-02-007.html

Enamel (13 January 2017): 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 2017): 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

Glass in Alchemy (11 January 2017): 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 2017): A Masonic flask made at the Kene, New Hampshire, glassworks where Henry schoolcraft was superindentant following his time at Lake Dunmore, in Vermont.
https://commons.wikimedia.org/wiki/File:Flask_with_Masonic_decoration,_Keene-Marlboro-Street_Glass_Works,_New_Hampshire,_c._1800-1825,_mold-blown_turquoise_glass_-_Albany_Institute_of_History_and_Art_-_DSC08155.JPG

"Glass" A Poem by Henry Schoolcraft (9 January 2017): Portrait of Henry Rowe Schoolcraft, frontispiece from Notes on the Iroquois: Or, Contributions to American History, Antiquities, and General Ethnology, by Henry Rowe Schoolcraft. (Albany: E. H. Pease & Company, 1847), p. ii.

Wkly blog recap (8 January 2017): 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 (7 January 2017): 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 (6 January 2017):
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 (5 January 2017): 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 2017):
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 2017): 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 (2 January 2017): From Micrographia, by Robert Hooke, 1664. Detail of illustration between pages 10, 11. http://archive.org/stream/mobot31753000817897#page/32/mode/2up

Wkly blog recap (1 January 2017): Conciatore, The Life and Times of 17th Century Glass Maker Antonio Neri, by Paul Engle, pp. 394, ISBN: 978-0974352954 Winner IPPY gold medal.

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