Foreign Literature and Science. 377 



INTELLIGENCE AND MISCELLANIES. 



I. Foreign Literature and Science. 



1. Analysis of an Ore of Silver. — An Analysis of An- 

 timoniated Sulpburet of Silver, (Red Silver,) has recently 

 been made in the laboratory of M. Berzelius at Stockholm, 

 by P. A. de Bonsdorf, Adjunct Professor of Chemistry, at 

 Abo. According to Klaproth, this mineral contains : — 



Silver 60 



Antimony 19 



Sulphur 17 



Oxygen 4 



100 



Proust makes it contain, 3 per cent, of Oxide of Iron, 3 

 of Sand, and 3 of Water, — 6 loss. 



The process of Bonsdorf appears to have been carefully 

 conducted, and bis result is — 



Oxygen. Sulphur. 



Silver 58.94 > which would ( 4.36 8.768 



Antimony 22.84 5 require (4.19 8.423 



Sulphur 16.61 



Earthy substance .30 



Loss 1.31 



100. 



In reflecting on this result, (says the author,) we see that 

 the given quantities of silver and antimony are susceptible 

 of combining with nearly the same quantity of sulphur. 

 We know that the sulphuret of silver contains 2 atoms of 

 sulphur and 1 atom of silver, and that the sulphuret of An- 

 timony is composed of 3 atoms of sulphur and 1 of anti- 

 mony. Consequently, the chemical constitution of the an- 

 timoniated sulphuret of silver will be expressed by 2S6S ^ -f 

 3A^S- and the calculated resuhs will become — 



