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| | Asherbooks Rare Books (Site not responding. Last check: 2007-09-30) |
 | | Fischer von Waldheim discusses and illustrates both the mineral turquoise or callaite, mined in Persia, Arizona and New Mexico, and the similarly coloured odontolite, found in fossil teeth, and proposes a division of the former into three varieties. |
 | | Set in roman types, with Russian publication data in cyrillic type on the verso of the title-page. |
 | | Fischer von Waldheim (1771-1853), a famous scientist and geologist appointed professor at the Imperial University in Moscow (1804), and director of its Museum of Natural History, was the first to suggest a comparative study of printing types to analyse the early history of printing, His description of turquoise is dedicated to Sir James Wylie. |
| www.asherbooks.com /1993_v.html (320 words) |
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