474 Messrs. Wohler and Liebig on 



which it was precipitated by bichloride of platinum, and de- 

 termined in the usual way*. 



0*3633 grm. of thialdine" gave 0*5845 grm. of carbonic acid 

 and 0267 gi'm. of water. 



0*509 grra. of thialdine gave 0"816 grm. of carbonic acid 

 and 0-3720 of water. 



0*4508 grra. of thialdine gave 0*566 grm. of ammonio- 

 chloride of platinum. 



0*6430grm. of thialdine gave 1*923 grm. of sulphide of silver. 



0*3140 grm. of thialdine gave 0*8420 grm. of water. 



The atomic weight having been ascertained by the analysis 

 of the hydrochlorate and nitrate, the preceding numbers lead 

 to the following formula — 



C,,H,3NS4, 

 as will be seen on comparing the theoretical and experimental 



163 

 Hydrochlorate of Thialdine. — Thialdine is dissolved in large 

 quantity by hydrochloric acid : the saturated solution has an 

 acid reaction. On spontaneous evaporation, or concentration 

 on the water-bath, it deposits large, regular, transparent prisms 

 of great lustre, and frequently an inch in length. The hydro- 

 chloric solution of crude thialdine contains in admixture a 

 foreign body of most offensive odour ; on agitating with aether 

 this odour disappears immediately, and the liquid which for- 

 merly was turbid becomes perfectly transparent. Hydrochlo- 

 rate of thialdine is rather soluble in water, less so in alcohol ; 

 both liquids dissolve a large quantity when hot, and deposit 

 beautiful and perfectly regular crystals on cooling. Hydro- 

 chlorate of thialdine is insoluble in aether. When heated in 

 the dry state this salt is decomposed without fusion ; it be- 

 comes brown, and chloride of ammonium sublimes with evo- 

 lution of a gas possessing a most offensive odour and burning 

 with a dull flame. From the solution of this salt nitrate of 

 silver throws down a yellow precipitate, which, on being 

 gently heated, turns black with evolution of aldehyde. This 

 black precipitate is a mixture of chloride and sulphide of 

 silver ; all the nitrogen of the base remains in the liquid in 

 the form of ammonia. 



* The following analyses were made by Dr. Strcckcr at Giessen, and 

 Dr. Stiidlcr in Gottingen. 



t Calculated from the proportion of 12 C : IN. 



