Glass Identification - Post here for all ID requests > Glass
lead glass
krsilber:
"'W.A. Thorpe, historian of English glass-maiking, asserts very confidently that it was an invention ín the stricter sense of the word, the result of an attempt conceived deliberately and carried out experimentally to provide a sound commercial substitute for rock crystal.'"
Just reread my earlier post. I didn't make it clear that it's Ravenscroft's work he's talking about here. Not that it matters, I just wanted to clarify the quotation.
Frank:
Several pages on hebrew glass history but one also confirms a DaCosta as introducing lead-glass to Mansell correction Ravenscroft. It refers to ancient lead glass as being a Hebrew invention - outside my sphere of interest.
http://www.hebrewhistory.info/factpapers/fp006-3_glass.htm
Odd how my present research keeps bumping into Lead glass... On they same page also credit Dagnia as introducing soda-glass to Scotland some 50 years after glassmaking started in Scotland - so treat their assertions with respect but caution.
KevinH:
We discussed that info on Hebrew glassmaking some time ago (but I can't find it through Search). The general consensus on the Board at that time was that the details seemed to be "tweaked" to suit the author's aims.
However, there was indeed a DaCosta, as mentiond by Hartshorne, Angus-Butterworth, Klein & Lloyd etc. But i think they mentioned him in connection with Ravenscroft, not Mansell. Dagnia (or Dagnias - same person / family??) is also mentioned by those authors.
I have not revisited the texts in detail, so I don't know whether my recollections are fully correct.
Frank:
There was quite a large Dagnia family presence in England, appearing in Scotland during the 1660's.
krsilber:
Found a reference discussing some WAY early lead glass, ca. 1550-1307 BC Egypt. Pg 27 in this Google book preview: Julian Henderson's The Science and Archaeology of Materials. http://books.google.com/books?id=p9xJ-VpUuNkC&pg=PA24&source=gbs_toc_r&cad=0_0&sig=ACfU3U16ZtJu-J6Ytel89Memw94beCtrmg#PPA38,M1
He also talks about some later uses of lead glass and a variety of other interesting things.
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