Foreign Literature and Science. 377 



INTELLIGENCE AND MISCELLANIES. 



\ 



I. Foreign Literature and Science, 



!• Analysis of an Ore of Silver. — An Analysis of An- 

 timoniated Sulphuret of Silver, (Red Silver,) has I'ecendy 

 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 

 ^^ Sand, and 3 of Water,— 6 loss. 

 The process of Bonsdorf appears to have been carefully 



tionducted, and his result is 



Oxygen- Sulphur. 



Silver 58.94 > which would ( 4.36 8.768 



Antimony 22.84 \ require ( 4.19 8.423 



'^ » 



Sulphur 16.61 



Earthysubstance .30 





Los 



s 1.31 



100. 



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

 "j^e given quantities of silver and' antimony are susceptible 

 of combining with nearly the same quantity of sulphur. 

 ^*e know that the sulphuret of silver contains 2 atoms of 

 ^^ulphur and 1 atom cf silver, and that the sulphuret of An- 

 'ifnony is composed of 3 atoms of sulphur and 1 of anti- 

 ipony. Consequently, the chemical constitution of the an- 

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

 'JAg-S^and the calculated results will become— 



