On the De- sulphur ation of Metnls. 



«i3 



The constituent parts of this water are the following ; 



Cont 



Carbonate of lime 

 Muriate of soda 

 Sulphate of magnesia 

 Sulphate of soda - 

 Carbonate of iron 

 Sulphate of lime 



Carbonic acid gas 

 Atmospheric air - 



12-25 



1-53125 



[To be continued.] 



XXXIX. Memoir upon the De-sulphuration of Metals. 

 By M. GuENivEAU, Engineer of Min^s*. 



xxMONG the number of metallic sulphurets which nature 

 presents to us, there are several the decomposition of which 

 is very important in the arts : the sulphurets of iron, cop- 

 per, lead, mercury, &c., give place to metallurgical pro- 

 cesses highly deserving of the attention of chemists. 



The nature and properties of these compounds are well 

 known, since chemists have so frequently made them an 

 object of inquiry. The facts, however, collected in labo- 

 ratories have never been carefully compared with those 

 furnished by the workshops, although it is very well known, 

 that the latter description of experiments furnish the most 

 useful results ; and the theory of various operations to which 

 we subject the sulphurets, has not kept pace with the rela- 



* From the Journal des Mines, vol. zxi. p. 5.- Jan. 1807. 

 03 



tive 



