Antonio Neri in Pisa

Majolica vase by Niccolò Sisti,

decorated in the grotesque style.

Antonio Neri's career in glassmaking took him from the city of his birth, Florence, to Pisa, Antwerp and possibly other places yet to be confirmed, such as Rome and Venice. Under the reign of Grand Duke Ferdinando de' Medici, a glass furnace at Pisa became an important source of diplomatic gifts in both glass and ceramics. Antonio Neri worked at this facility in the first years of the seventeenth century. Later, the same foundry would receive an order for exceptionally clear glass to be used by Galileo in his telescopes. It is unknown how that particular project worked out, but the furnace master, Niccolò Sisti, made a name for himself supplying glassware to the Vatican, the king of Spain and many nobles throughout Italy and Europe. Undoubtedly, Neri's glass career was strongly influenced by his tenure in Pisa with Sisti. 

In the early seventeenth century, there were several glass furnaces in Pisa. One was run at the pleasure of Grand Duke Ferdinando by Niccolò Sisti. Raised in Norcia in Perugia, he likely learned his trade at an early age;  Sisti's father, Sisto de' Bonsisti, was said to be an expert in making paste gems. This would account for the son's apparent skill in the medium of glass in addition to his ceramics prowess for which he was previously employed at the Casino di San Marco in Florence. For Neri, working at Sisti's glass house in Pisa played an important role in his glassmaking education. Sisti would serve three Medici grand dukes, Francesco I, Ferdinando I and Cosimo II. When work came to a stop at the Casino di San Marco, after Francesco’s death, Sisti may have opened his own factory in Florence for a short time, but then moved to a new facility in Pisa.

 In 1592, Grand Duke Ferdinando set up a glass shop in the central part of Pisa, along the north bank of the Arno River. This furnace was staffed by Muranese workers and was located in the city center, along the river. Archaeologists have unearthed its remains in the courtyard of what is now 43-44 Lungarno. The operation was capitalized with a loan of five hundred scudi made by Ferdinando I to Sisti, with a special mandate: he was to introduce new forms of pottery to the region. In addition to glass, the furnace at Pisa would produce soft-paste porcelain and majolica ceramics. These were both forms that Sisti had helped to develop when he worked in Florence at the Casino; he was involved in Francesco’s quest to duplicate Chinese porcelain.

In 1602, Neri was to be found working alongside Sisti at the Pisan furnace. According to his own account, this is where he worked on special colors, and collected river stones for glass frit. Here he made kermes based paints, enamels and used ferns as an alternative plant salt for glass. In all likelihood, he would have had access to the nearby botanical gardens and the small adjacent laboratory located just a few blocks from the glass furnace. 

Early in 1604, the priest would make his trip north to Antwerp to visit his friend Emmanuel Ximenes. During Neri's seven year absence, Sisti's projects included cristallo table service for the Vatican, and special glass for the lenses of Galileo's telescopes. Upon Neri's return from Flanders, we again find him working in Pisa, this time on alchemy. In a copy of his last known manuscript, a heading reads, "Techniques copied from an old book here in Pisa."  The university at Pisa was an intellectual center and a repository of technical knowledge. There, Neri had access to a wide range of materials in the libraries. The furnaces and laboratories provided him with hands-on experience, but there can be little doubt that he was a voracious reader as well. On the same page of this manuscript appears the date 26 January 1614. This is the last known specific information on the priest's whereabouts, since he would be dead within the year, at the age of thirty-eight.

*This post first appeared here in a shorter form on 18 October 2013.

True Colors

The European Roller [Pica Marina]

Antonio Neri's book, L'Arte Vetraria, is devoted to making glass from raw ingredients found in nature. Many of his finished creations were intended to also resemble the natural world. A number of colors are meant to mimic the appearance of gems and minerals, others are named after plants and animals. Some are easily recognized today, even if they are not as familiar as they were in the seventeenth century. One of his recipes will make "a wonderful pimpernel green," while others evoke peach and orange blossoms. An entire section of the book is focused on paints that are named after the flowers from which the colors are extracted. Many of these plants have remained common: poppies, irises, violets, lilies, carnations and red roses. Others are less so: the mallow, pomegranate, broom and borage flowers.

In addition to flora, the fauna make a few notable appearances in Neri's book. In chapter 16, in the preparation of iron oxide pigments, he advises that after fifteen days in the furnace, the product will be finished when it takes on the purple color of the peacock. In chapter 73 he gives a method for "tinting rock crystal the color of a viper" and chapter 121 is the method for a glass which is "red like blood."

Named in several chapters is a shade of 'celestial blue,' which Neri likens to the color of the "gazzera marina." Common bird names pose a special challenge for translation in that they, like the birds themselves, never seem to settle in space or time for very long. Vernacular names of a species can change from one century to the next, one region to another, even between adjacent valleys and several species can share the same name. It is with this admonition that we attempt to flush out the elusive gazzera marina.

Consulting a modern Italian dictionary draws the eye to the similar sounding 'gazza marina' (alca torda), known in English as the razorbill. This sea bird inhabits coastal cliffs, but alas, as a close relative of the penguin, it dons only black and white formal attire. Digging deeper we find poet Gabriele d'Annunzio, "At Dawn" carefully tracking the gazzera marina across a salty marsh, in his Halcyon. This time the poet himself throws us off the trail with his description, since no bird sports five digits but the chicken. Turning to etymology, we find another potential match in the magpie (pica pica); it is a credible but unconvincing fit with its blue and white plumage.

Aldrovandi's pica marina

Combing the references of Neri's own sixteenth century, we find the best candidate is the roller (pica marina). This bird was described by naturalist Ulisse Aldrovandi, a friend of Don Antonio de' Medici's father and guest at the Casino di San Marco, where Neri later worked. Other contemporary authors list the gazzera marina as a synonym to Aldrovandi's pica marina. Neri's Latin translator Frisius (1668) and his German translator Geissler (1678) agreed, both sighting the "Pica Marina" in their works.

This post first appeared here on 13 Sept 2013.

Thévenot in India

Antique gold Arsi finger ring,

 Rajasthan India.

This is the third and final installment of a series that has followed seventeenth century French tourist Jean de Thévenot from Europe to the Levant and then into Syria. Now he travels to India. We have specifically looked into his diary with an eye toward passages that mention glass or glassmaking. While our intrepid traveler had no special connection to this art, he did possess a keen, inquisitive mind; collectively, his observations about glass give us a glimpse into the state of affairs in the Middle and Far East in the mid 1600s. 

We left off with Thévenot as he headed up the Tigris River toward Baghdad, in the autumn of 1663. While he was anxious to see Mughal India, actually getting there presented some difficulty due to hostilities between the Dutch, British and Portuguese, which extended to their trade operations around the world. After a first attempt was aborted, he made a strategic retreat to Isfahan and bided some time with shorter excursions from there. Finally, in the autumn of 1665 he booked passage on the originally English ship “Hopewell” recently purchased by an Armenian trader and captained by an Italian. [1] The ship departed from Basra and made port at Surat, India in January of 1666.

The city of Agra is in the Northwestern part of India, a thousand kilometers from Surat and the coast; it is known most famously as the home the Taj Mahal. When Thévenot passed through, he noted of the women “They wear a great many [rings], and as they love to see themselves, they have always one with a looking-glass set in it, instead of a stone, which is an inch in diameter.” [2]

These rings, set with a mirror, are known as “arsi” and can still be found in some areas around the country. Indeed, Sharma and Seth note in their 1997 book on contemporary regional costumes and ornaments that mirror rings were popular in the northern most reaches of India. In the western Himalayas at Chamba and as throughout India, they are still worn today. “Arsi or arsu means a mirror. An ornament with this name is a ring fitted with a round mirror or a looking-glass. It is usually worn on the thumb of the right hand. With the help of arsi, the hill woman can look at herself in the mirror and feel assured of her beauty in such places like fairs and festivals. Thus she can stealthily have a glance in the mirror whenever she desires, even in the company of males without feeling awkward.” [3]

Another reference states that in the seventeenth century arsi rings were worn by both men as well as women, but I have been unable to confirm this. In any event, they appear to have been wildly popular. On an earlier expedition through Aleppo, Syria, Thévenot observed “five or six hundred cases of [mirrored] glass” being shipped down the Euphrates River. When he expressed surprise at the rough handling, he was told “that it mattered not, though it were all broken into pieces, because the Indian men and women buy it only to have little pieces set in rings, which serve them for looking-glasses to see themselves in.” [4]

Thévenot’s first landing was in Surat on the west coast of India, about 300km north of Mumbai. Twenty years later, in 1688, Captain Alexander Hamilton landed at the same port and recorded, “The [Muslim] women wear gold rings on their fingers, and sometimes one on their thumbs, with a small looking-glass set in it.” [5] Other travelers also noticed the rings:  In the 1660’s Frenchman Souchu de Rennefort observed similarly, “They wear also many [rings] on their fingers, and among the rest, one with a small looking-glass in it, which serves them to contemplate themselves.” [6]

The earliest account I have been able to find recounts not a glass mirror but one of metal. On 25 September 1637, ambassadors from the Danish duke of Holstein were visiting the King of Persia and were entertained by six dancing women from India. The women were accompanied by their husbands who played musical instruments. “Some of them had bracelets of pearl, others of silver, but they had all rings on their fingers, and among the rest, they had upon the thumb, upon which in the place where the stone should be, there was a piece of steel, about the bigness of a crown-piece of silver, and so well polished that it served them for a looking-glass.” [7]

As these accounts suggest, vanity may well have been the motivation for the popularity of the arsi rings, but it is worth noting that mirrors did play a role in some religious practices. Wikipedia states, “The Nizhal Thangals and Pathis have, in their sanctuary, a mirror to reflect the images [of] worshippers. […] The mirror's placement symbolizes that God is inside oneself and it is of no use to seek God elsewhere.” [8] In some Muslim weddings of Southern India, a traditional ritual is called ‘Arsi-Mushaf’ or “the mirror ring and the Quran,” in which the newly betrothed observe each other through a mirror.

Thévenot stayed in India for over a year and crossed the country to its East Coast. Finally, he returned to Surat, sailed to Persia and traveled north back to Shiraz. He spent the summer of 1667 at Isfahan, after suffering an accidental gunshot wound. In the autumn, he started north for Tabriz, but died on the way at Meyaneh on 28 November 1667.

[1] Armenians in Asian Trade in the Early Modern Era, ed. Sushil; Kevonian Chaudhury (Keram). (France: Les Editions de la MSH, 2008) p. 106.

[2]Jean de Thévenot: The Travels Of Monsieur De Thévenot Into The Levant: In Three ..., Volume 3

 (London: Archibald Lovell Faithorne, 1687)v. 3,  p. 38.

[3] Kamal Prashad Sharma, Surinder Mohan Seth: Costumes and Ornaments of Chamba (New Delhi: Indus Publishing,1997), p.113

[4] Jean de Thévenot: “The Travels of Monsieur Thévenot Into The Levant” (London: H. Clark, 1687), v.2, p.40.

[5] Alexander Hamilton, A New Account of the East Indies: Giving an Exact and Copious ..., Volume 1(London: C. Hitch; and A. Millar, 1744) v. 1, p. 165

[6] Gabriel Dellon, Jodocus Crull, Souchu de Rennefort: A voyage to the East-Indies: giving an account of the isles of Madagascar (London: D. Browne, 1698) p. 25

[7] Adam Olearius, John Davies, Johann Albrecht von Mandelslo: The Voyages & Travels of the Ambassadors from the Duke of Holstein, to the ... (London: Thomas Dring, and John Starkey, 1662), p.277

[8] Wikipedia: https://en.wikipedia.org/wiki/Ayyavazhi_rituals

Thévenot Continues East

Stained glass windows of the Nasir al-Mulk 'Pink Mosque', Shiraz, Iran

Photo by Domiri Mohammad Reza Ganji.
(Click to enlarge)

Previously, we followed the progress of seventeenth century tourist Jean de Thévenot, noting his comments about glass as he traveled. He sailed from Rome to Malta to Constantinople to Egypt. He then continued overland through Syria and sailed down the Euphrates River toward the Persian Gulf.  At Basra he turned around and headed north, picking up the Tigris River to Baghdad where he continued eastward to Persia. In Isfahan he described numerous species of plants, animals and insects. Further south he took note of a city where glassmaking captured his attention:

The people of Schiras [Shiraz, Iran] are very witty and the city hath given birth to most of the best poets of Persia. There is much glass made there, and several glass-shops are in town, though they work not constantly in their glass-houses, but let the fire go out after they have employed a certain quantity of materials. They make their glass of a white stone, almost as hard as marble, which they get in a hill four days journey from Schiraz and it is very clear: especially they make great bottles as clear and delicate as in any other place in the world; but it is wonderfully strange how they can blow the great bottles they call ‘Caraba,’ which are as thick as one finger and hold nearly thirty quarts of wine; these bottles are covered with the straw of canes. [1]

Preceding Thévenot in Shiraz by a number of years (1627) was the British traveler, Sir Thomas Herbert, who stated that there was “…no part of the Orient showing better or richer wine.” [2] The mutually beneficial association between the production of wine and glass is one that appears in numerous locations throughout history. That both crafts should occur here, at the center of activity for this region’s premier vineyards should be no surprise. 

The region’s ‘Shirazi’ wines have been connected by various legends to the French Rhone variety now known as ‘Shiraz,’ but the vineyards in Iran are now defunct, and no definite conclusions have been reached, except that if a kinship exists, it is a very ancient one. In other quarters, Marco Polo mentioned Persian wines [3] and Omar Khayyam praised them throughout his Rubaiyat. [4]

At the same time that Thévenot passed through the region, so did fellow Parisian Jean Chardin (Sir John Chardin) who spent about eighteen months visiting (1666-7). It is unknown if the two travelers met. In his own published diary Chardin stated  “The art of glass-making; there are glass houses all over Persia, but most of the glass is full of flaws […] The glass of Chiras [Shiraz] is the finest in the country” and he went on to say that “Moreover, the art of glass-making was brought into Persia within these four score [80] years. A beggarly and covetous Italian taught it at Chiras for the sum of fifty crowns.” [5]

This last passage is often quoted in reference books without comment, to the point that it has become quite famous. At the risk of stating the obvious, the notion that one man, a foreigner, down on his luck, could single handedly bootstrap an entire industry that would fully mature throughout Persia in eighty years is absurd on its face. Beyond that, it is something of an insult to a culture that current scholarship credits with key developments in the invention of glass more than five thousand years ago. [6] Chardin’s condescendence toward Persian artisans and craft in general is well demonstrated throughout his book. His claim is plain enough, however if we want to be charitable, we could speculate that he misunderstood his source, who actually told him that the Italian was responsible for showing European style glassmaking to a well established technical community in Shiraz. Historian Stefano Carboni identifies a fifteenth century downturn and says “in Iran the industry was revived with the help of European, mostly Venetian, craftsmen in Isfahan and Shiraz from the seventeenth century.” [7]

[1] Thévenot v.2, p. 125, 126
[2] Thomas Herbert  “A Relation of Some Yeares Travaile, Begunne Anno 1626.” (London: Stansby and Bloome, 1634), p. 133.
 By Thomas Herbert   also see http://www.saddleflasks.com  “An extensive reference site devoted to Late Persian glass.”
[3] By Marco Polo, “The travels of Marco Polo, the Venetian,” trans. by William Marsden (London: J.M. Dent, 1926), p. 41 (bk.1 ch. 15).
[4] Omar Khayyam, “Rubaiyat of Omar Khayyam” trans. by Edward Fitzgerald (Boston: Branden Books, 1989), for example, stanzas VI, XI, XII, XLI, LVI.
[5] John Chardin “Sir John Chardin's Travels in Persia” (New York: Cosimo, 2010) p.275  (abridged English translation of 1724 original).
[6] For instance, see  https://en.wikipedia.org/wiki/History_of_glass http://www.iranicaonline.org/articles/glass ,  https://en.wikipedia.org/wiki/Sasanian_glass .
[7]  Stefano Carboni, “Glassware” in Medieval Islamic Civilization: An Encyclopedia edited by Josef W. Meri (New York, Routledge, 2005) v. 1, p. 298.

Travels to the East

Jean de Thévenot, from

"Relation d'un voyage fait au Levant" (1664)

In 1652, at the age of eighteen, a wealthy Frenchman named Jean de Thévenot finished his studies at the University of Paris. He celebrated his achievement with a grand tour that would take him, not just through Europe, but unexpectedly half-way around the world, where among other things he would find glass being made. 

In Rome, he befriended fellow Parisian, Barthélemy d'Herbelot, where they conspired to travel together to the Levant. 

Circumstances detained d'Herbelot and after waiting five months in Malta, Thévenot gave-up on his companion and set out on his own to Constantinople. Four years later, in 1659. He returned home only to prepare for an even more epic adventure, one that would last until his 1667 death in Azerbaijan from an accidental pistol shot. 

Thévenot kept a travel diary, he picked up languages easily and endeavored to blend-in to local culture as much as possible. Throughout his travels he made keen observations of people, customs and of the natural world around him. He published a volume of his adventures to great acclaim, two more would follow after his death. In 1687 his work was translated into English, when it found a whole new audience. 

Of special interest to us are his numerous observations about the glass trade. This was a subject to which he had no special interest or connection, but his natural curiosity and communication skills open a window into an otherwise poorly documented piece of the glass history puzzle.

On Malta, even before embarking for the Far East, he notes that “sore eyes” are a problem because of the bright sun on the white (limestone) earth of the island “which makes many commanders and knights wear green spectacles”; certainly an early incarnation of sunglasses. [1] In Constantinople (today Istanbul) he visited the great mosque Hagia Sophia and remarked “it is full of lamps and curiosities in glass balls, of which one for instance, contains  a little galley, well rigged, another a model of the mosque in wood and the rest a great many pretty knacks of that nature.” [2] Having booked passage out of Alexandria, Egypt on an English gun boat, he explains that the sailors kept track of their speed with a “little slat and very thin piece of wood tied to a line and when they throw it into the sea, they turn a half-minute sand glass […] every seven fathoms of the line making a mile in an hour.” [3] This is the origin of the nautical unit of speed known as the 'knot', the method of paying out line spaced with knots tied in the line at intervals of  8 fathoms - 47 feet 3 inches (14.4 m). This method of reckoning progress with a line was used well into the nineteenth century, the units are still used today, both for boats and aircraft.  A vessel travelling at 1 knot along a meridian travels approximately one minute of geographic latitude in one hour. [4]

In Damascus, Syria, he visited the great mosque there (Umayyda). Some natives kindly offered to take him in, disguised with a turban on his head, but he declines, fearing that if discovered, he will be forced to choose between his life and his Christian faith. Nevertheless he walks around the tremendous structure and observes that “The pavement is all of lovely stones that shine like lookinglass” and he continues “I went up to the terrace-walks, to the windows of that mosque, which are made like the windows of our churches and have panes of glass set in plaster, which are wrought into figures.” [5]

West of Aleppo, Syria, on the banks of the Euphrates River, Thévenot explains that, “barks loaded with glass (of which I will presently speak,) go to Bassora [Basra].” A ‘bark’ or ‘barque’ was a small three masted sailing ship. “While I was at Aleppo, the Sheik Bandar hired a bark to carry five or six hundred cases of glass, which he sent to the Indies.” And “I wondered to see that they who baled up these chests for the Sheik Bandar, tumbled them so rudely that they broke all the glass; but they told me, that it mattered not, though it were all broken into pieces, because the Indian men and women buy it only to have little pieces set in rings, which serve them for lookinglasses to see themselves in. That glass is all over laid with quicksilver on one side and is a very salable commodity in the Indies and profitable to the merchants.” [6]

One implication from this passage is that the named Sheik Bandar ran a glassmaking operation in Aleppo. It is interesting to note that Florentine glassmaker Antonio Neri had an uncle, his father’s brother Francesco, who was a merchant living in the Tuscan enclave inside Aleppo about sixty years earlier.

In the next installment we will continue to follow the thread of glassmaking references in the chronicles of Thévenot’s travels which take him to Persia, where he finds a glassmaking center.

[1] Jean de Thévenot, “The Travels of Monsieur Thevenot Into The Levant” (London: H. Clark, 1687) v.1, p. 6.
[2] Ibid, p. 22.
[3] Ibid, p. 268.
[4] See Wikipedia http://en.wikipedia.org/wiki/Knot_(unit).
[5] Ibid, v.2, p 17.
[6] Ibid, p.40.

Early Modern Aleppo

Aleppo, 1764

Antonio Neri is famous for  his 1612 book on making glass, [1] but in the late sixteenth century his father was also famous; Neri Neri, as he was called, was a graduate of  the esteemed 'Studio Fiorentino', head of the Florentine physicians and apothecaries guild, and royal physician to the grand duke of Tuscany, Ferdinando I de’ Medici.  

In those days, one of the best connections a physician could have was a reliable associate who could procure the exotic herbs and remedies prepared in the Orient. To have such a contact in one's family was even better, but perhaps best of all was an older brother who was a merchant living in the fabled city of Aleppo, located in Syria at the very end of the Silk Road. The brother of Neri Neri was named Francesco or "Franco" [2] for short and Aleppo was no ordinary city; it was a sort of international crossroads for traders connecting north and south, east and west. It was where silk and cotton were traded for wool and metals, where gold and silver changed hands for rubies and lapis, and where exotic spices and medicinal preparations could be found and exported to places like Venice and  Florence. [3] In 1583, Englishman John Eldred passed through Aleppo and recorded this:

[W]e passed forward with camels three dayes more untill we came to Aleppo, where we arrived the 21 of May. This is the greatest place of traffique for a dry towne that is in all those parts: for hither resort Jews, Tartarians, Persians, Armenians, Egyptians, Indians, and many sorts of Christians, and enjoy freedome of their  consciences, and bring thither many kinds of rich merchandises. In the middest of this towne also standeth a goodly castle raised on high, with a garrison of foure or five hundred Janisaries [Sultan’s guard]. Within foure miles round about are goodly gardens and vineyards and trees, which beare goodly fruit neere unto the river side, which is but small; the walls are about three English miles in compasse, but the suburbs are almost as much more. The towne is greatly peopled. [4]

Aleppo has been in continuous occupation since prehistoric times; at least as far back as 5000 BCE, according to archaeologists. Stones were laid there before there was paper or written language or glass for that matter. There is a legend that the Arabic name for Aleppo, 'Halab' once meant "gave out milk" and was a reference to when Abraham gave milk from his white cows to travelers as they passed through the area. 

1563, when Franco Neri was still a young man of twenty-six, living in Aleppo, both he and his father were referenced in a couple of documents.  They are still held in the grand ducal archives in Florence, written in the reign of Cosimo I de' Medici. [5] This indicates, at the very least that the Neri family was in service to the leaders of Florence three full decades before Antonio Neri would make glass for Prince Don Antonio de' Medici.

In the sixteenth century the Christians in Aleppo lived in a tightly knit neighborhood that developed as a result of an Ottoman invasion around 1400. There were four churches standing side by side in the Jdeydeh quarter, only the old Maronite Church of Saint Elias was associated with the  Roman Catholic Church. If Franco Neri was in town when the above John Eldred passed through with his two companions, it is not impossible that they could have attended mass in the same church one Sunday in late May of 1583. 

Two decades later, the Emir (prince) of Aleppo, Fakhr-al-Din II forged an alliance with Tuscany, which apparently involved both economic and military provisions. He was attempting to break free of the Ottoman Empire and is considered by some to be the father of the Lebanese independence movement. He would go on to spend a number of years visiting Italy and Florence in particular, where he formed a friendship with then Grand Duke Cosimo II. 

Today, the beautiful, ancient city of Aleppo stands mostly deserted and partly demolished by war. Some news stories sight the determination and character of the current independence movement by quoting a poet, al-Mutanabbi, who lived in the mid tenth century. He spent the better part of a decade at the royal court of Aleppo, where it is said he did his best work. His most quoted lines are from a piece sometimes called "the poem that killed the poet." A legend tells that one night he was cornered by his enemies. Ready to flee, he was reminded of his own words by a servant, which caused him to stay and fight. The poem closes this way:

The desert knows me well, the night and the mounted men. 

The battle and the sword, the paper and the pen. [6]

[1] Neri, L’Arte Vetraria. (Firenze: Giunti, 1614).

[2] Registri Battesimali Firenze, reg. 10, f. 71v.  3 Feb., 1537, born to Jacopo Neri, barber [and surgeon] from dicomano, in the parish of San Ambrogio, Florence. (A couple of blocks from the Borgo Pinti childhood home of Antonio Neri.)

[3] Gian Pietro Vieusseux, Archivio storico italiano,  vol. 141, Issues 517-518 (Firenze, Leo S. Olschki, 1983), p. 370. “His correspondence also makes several references to the activity carried out by the Venetian court who had often had occasion to attend to solicit the interests of friends or acquaintances as Francesco Neri of Aleppo, the Capponi and Rinuccini [families].” 

[4] Richard Hakluyt, A selection of curious, rare and early voyages ..., (London: R. H. Evans, 1810)v. 2,  p. 403. “The voyage of M. John Eldred to Tripolis in Syria by sea, and from thence by land and river to Babylon and Balsara. 1583”

[5] Carteggio universale di Cosimo I de Medici /XI Archivio di Stato di Firenze Inventario XI (1560 – 1564) Mediceo del Principato Filze 489-499°, pp. 162, 206; /XII (1562-1565) Filze 500-514 p. 60.

[6] al-Mutanabbi (915-965 AD). He is thought to have spent nine years in Aleppo where he composed some of his best work, http://en.wikipedia.org/wiki/Al-Mutanabbi  See also http://aminotes.tumblr.com/post/33116016101/aleppo-a-city-in-flames 

Translated into German by Friedrich Dieterici, ed, tr. Mutanabbii carmina cum Commentario Wfthidii, (Berlin, 1858-1861), pp. 481-4. vv. 1-22, then into English by Nicholson, who wrote of Mutanabbi, “Although the verbal legerdemain which is so conspicuous in his poetry cannot be reproduced in another language, the lines translated below may be taken as a favorable and sufficiently characteristic specimen of his style.” Reynold A. Nicholson, A Literary History of the Arabs (Unwin, 1907).p. 307. Subsequently Nicholson published the present version in Reynold A. Nicholson, Translations of Eastern Poetry and Prose (Cambridge: Cambridge U. Press, 1922), p. 80. 

Glass Discovery Legend

Giovan Maria Butteri,

"The Discovery of Glass"
Studiolo of Francesco I de' Medici

Any self-respecting Roman historian living in the first century could tell you the story that glass was first discovered by Phoenician sailors. They were temporarily grounded at the bay of Haifa, near the Belus River, in the shadow of Mount Carmel, forced ashore by a storm. Needing to eat, they improvised a fire on the beach in order to cook their food. Using natron, a mineral they were carrying as cargo on the ship, they built up a stove. To their amazement, in the heat of the fire, the natron mixed with the beach sand started to melt and liquid glass trickled out.

Actually, starting with Pliny the Elder, the author of the most famous version of this story, skepticism abounds about how much of it was true. Nevertheless, if we gently tease apart the loose threads of this yarn we find that it is not without substance. First, there is the location; not just any port in a storm, this region was the site of a thriving glass industry as early as the sixth century BCE, due to the exceptional, pure white sand at the outlet of the Belus river. Archaeologists have excavated ancient glass furnaces at the nearby cities of Tyre and Sidon.

Next, the sodium carbonates in natron do indeed form glass when mixed with fine sand and brought to a high temperature, but this takes strong, concentrated heat, likely more than could be provided by a cook's beach fire. However, there is another possible explanation; natron is a hydroscopic mineral – this means it pulls moisture out of the surrounding environment. The water is locked into its solid crystal structure, where it remains until it is released either chemically or through heat. Natron can hold a remarkable amount of water, up to two-thirds of its weight. This is why it was used extensively to preserve mummies in Egypt; it dried out the bodies, soaking up moisture, quickly preserving them. While the story of the Phoenician sailors deserves a healthy dose of skepticism, it is also easy to see how the decomposition of the natron in the fire, resulting in the release of briny liquor, might be misinterpreted as glass, which then disappeared into the sandy beach.

In the early 1600s glassmaker and alchemist Antonio Neri published the very first printed book of glass recipes, and in his introduction he too recounts the tale. However, in Neri's telling, natron does not make an appearance. Instead, the sailors use 'kali,' a coastal plant that is rich in alkali salts, to fuel their fire. The salts in kali are substantially similar to natron and, according to the story, triggered a similar result. In this period, Kali ash was a well-known ingredient in glass making. Neri used it in his own recipes, so the substitution is not surprising, but in this respect, Neri's version of the story with kali does appear to be unique in the literature. It is interesting to note that Lodovico Domenichi, who was good friends with Neri's grandfather, tells a version of this story in his Italian translation of Pliny's Natural History. Here the sailors use natron, but in the next paragraph, Domenichi describes how local natives later used kali plants to make their own glass.

The above depiction of the discovery of glass was painted by Butteri, one of a select group of painters for the Medici court in Florence. The work was commissioned to hang in the secret "studiolo" laboratory of Francesco de' Medici, a concealed barrel vaulted room tucked under a staircase in the Palazzo Vecchio in the early 1570's. It was only accessible through secret passages, one leading from Francesco's bed chamber. Another led from the chamber to an unmarked door on the street and a third passage led from the chamber to the secret treasury room once used by his father, Grand Duke Cosimo I. The walls and ceiling were entirely filled with paintings, the lower ones concealing cabinets full of oddities of nature, precious gems, coins, alchemical concoctions, and other treasures. Presumably, the cabinet behind Butteri's "Discovery of glass" would house some of the intricate Venetian glass vessels for which the craftsmen of Murano had become world famous. Shortly before the room was completed, a small number of these glass masters were allowed to teach their secrets in Florence by special arrangement with the Venetian government.

This post first appeared in a shorter form here on 9 October 2013.