386 Miscellantei. 



MISCELLANIES. 



FOREIGN AND DOMESTIC. 



The following notices are translated from Berzelius's last yearly report on the 



progress of science; by Dr. Lewis Feuchtwanger of New York. 



1. A new ore of Antimony has been discovered in the Hartz 

 mountains by Zinkin, which resembles zinkenite and appears to be 

 also a subantimonio-sulphuret of sulphuret of lead with sulphuret 

 of silver. 



2. A new Tenantite has been examined by Hemming from a new- 

 ly opened mine in Cornwall which consists of Arsenic, 11.5 



Copper, 



Iron, 



Sulphur, 



Silex and Gangue, 



. 48.4 



14.2 



- 21.8 



5. 



3. Vanadiate of lead. — Johnson discovered some species of vana- 

 diate of oxide of lead at Wanlockhead in Scotland, one species occurs 

 on calamine in form of warts and as large as a pin's head. It is of a 

 dirty white and appears to be dew of a pale red powder, has a res- 

 inous fracture and specific gravity of about 7. The other is black 

 and looks like earthy manganese; a third has not yet been described, 

 but Johnston has sent specimens to the Collection of the Royal Swe- 

 dish Academy ; it is regularly crystallized and appears to be a bi- 

 vanadiate of the oxide of lead. 



4. Plumbacalcite has been described by Johnson as a mineral 

 found at Wanlockhead in Scotland ; it consists of carbonate of lime 

 and carbonate of lead ; it is crystallized in the primative rhomboid of the 

 calcareous spar ; it occurs both transparent and opaque and consists 

 of 92.2 carbonate lime, 7.8 carbonate of lead. By beat the car- 

 bonic acid is evolved, and the mineral assumes a reddish color. This 

 mineral offers an interesting proof of the isomorphism of oxide of 

 lead with a rhomboid of carbonate of lime. 



5. Pelokonite.— Richter describes an uncrystallized mineral, oc- 

 curring in Chili, with malachite and copper-green under the above 

 name, (from ncsXog brown and xov»s powder). It contains phosporic acid 

 and the oxides of iron, manganese and copper ; it has a blackish blue 



