on the Alcohol of Sulphur ^ or Sulphuret oj Carbon. 195 



I tried also to produce carbosulphurets of metallic oxyds. The 

 process simply consisted in precipitating metallic solutions, by 

 solutions of the sulphuret of carbon in caustic potash. The pre- 

 cipitates which were thus obtained, had characters sufficiently 

 distinct to shew that they were chiefly metallic carbosulphu- 

 rets ; but as the presence of a hydrosulphuret, and of carbo- 

 nate of potash, in the solutions used for these precipitations, 

 necessarily interfered with the distinctness of the results, I 

 shall not trouble the Society with a detail of these experi- 

 ments. 



E. Experiments to determine the nature of a particular Substance, 

 produced by the action of nitro-muriatic Acid, on the Sulphuret of 

 Carbo?i. 



We have already alluded, Dr. Marcet and myself, in the 

 course of our paper, to a new and singular substance, which 

 we produced by the long continued action of nitro-muriatic 

 acid on the sulphuret of carbon. This compound was disco- 

 vered in the following manner. 



A portion of sulphuret of carbon was exposed to the action 

 of a mixture of fuming nitric acid with concentrated muriatic 

 acid. The acid instantly acquired a peculiar odour resembling 

 that of muriated sulphur. Upon trying to promote the com- 

 bination by applying heat, the sulphuret of carbon was ex- 

 pelled in the form of vapour, which obliged us to leave the 

 mixture to its own spontaneous action, under the temperature 

 of the atmosphere, which was then at least 70°.* The sul- 

 phuret of carbon soon passed to a reddish orange colour, 

 which it communicated to the acid; and during this change, 



• In August, 1812. 

 MDCCCXIII. D d 



