i88 Prof, Berzelius's Experiments 



sulphur and carbon recovered by our analysis, were precisely 

 equal in weight to the sulphuret of carbon subjected to exa- 

 mination, we are the more confident in believing that it does 

 not contain any other element. 



APPENDIX BY PROFESSOR BERZELIUS. 



A. Particulars respecting the Mode in which the Proportions of 

 Sulphur and Carbon, in the Alcohol of Sulphur, were established. 



Two analytical experiments were made in succession, in 

 the manner described in the paper {§ IV.), with the following 

 results. 



Exp. 1. 1,05 parts* of sulphuret of carbon produced 0,24 

 parts of sulphureous acid gas, and 0,59 parts of carbonic acid. 

 The sulphuret of iron found in the tube was dissolved in nitro- 

 muriatic acid; the oxyd of iron was precipitated from this 

 solution by caustic ammonia in excess, and the filtered liquor 

 was neutralized by muriatic acid. From this solution, muriate 

 of barytes precipitated a quantity of sulphate of barytes, which, 

 after ignition, weighed 5,6. From Mr.T. De Saussure's expe- 

 riments, as well as from inference from the doctrine of deter- 

 minate proportions, 100 parts of carbonic acid contain from 27 

 to 27,1 parts of carbon. Therefore the above mentioned 0,59 

 parts of carbonic acid contain 0,1593 °^ carbon. From the 

 experiments on the composition of sulphate of barytes, pub- 

 lished by myself, 100 parts of that salt contain 13,66 of 



• The weights represented by these numbers v/ere grammes ; so that the quantity 

 of sulphuret of carbon employed in this experiment, was 1,05 gramme, corresponding 

 to about 15; English grains. 



