60 CATALOGUE OF THE \_\1th daij\ 



1433 Large specimen of yellow quartz crystals, or amethystine 

 cubic fluor, having a natural fracture crossing its surface, 

 Durham ; and white quartz crystals, partially coated by 

 calcareous spar > 



1434 A fine specimen of minutely crystallized manganese, on 

 the surface of haematites, and a brown foliaceous iron ore 



1435 Native copper, combined with vitreous copper quartz, &c. 

 from the mines of Count Pokadeschy, near Uralgeburge, 

 Siberia 



1436 A piece of the true avanturine being part of the great Leve- 

 f rian specimen; ancient artificial ditto, from ruins in 



Rome ; and the modern imitation 



1437 Thread-like chalcedony, crystallized in the hollow of a 



piece of quartz, Germany £. 1 



1438 Oculus mundi, two specimens /—•/£> - o 



1439 A very rich specimen of Lumachelli marble, unpolished, 



and exhibiting fragments of the shells, from whence the 

 vivid colours of that species of marble are derived 



1440 A large and fine specimen of crystallized cubic salt, from 



Nantwych, Cheshire 



End of the Twelfth Day's Sale, 



