JQg ON^ THt COMPOUNDS OF SULPHUR AND OXYGEN, 



Chemical exa- The lofs is flill very confiderable. Probably the greater part 

 mination of the ^f j^ j^ Qw-ing to the preience of water ; the amount of which 



red liquid or /i//- . . . „, p r • 



fburcud wuriaikit IS impoffible to afcertam. 



i>cid. The above analyfis conveys but an inadequate idea of the 



conftitution of fulphureted muriatic acid, becaufe the propor- 

 tions of its conflilueiits vary confiderably, according to the pro- 

 cefs. The longer the procefs is continued the greater is the 

 encreafe of muriatic acid, and the fmaller the proportion of 

 oxide of fuiphur. I found a portion of fulphuret thus formed 

 to contain 47.1 muriatic acid 



35.2 oxide of fuiphur 

 4.0 fulphuric acid 



86.3 



13.7 lofs 

 It was this lad fulphuret that was obtained in the procefs in 

 ■which the quantity of fulphuret which I got, as ftated above, 

 was meafured, the fecond Woulfe's bottle contained a folution 

 of muriatic acid and fulphuric acid in water. Hence we fee 

 that the fulphuret, after being formed, had been partly covered 

 over by the oxymuriatic acid gas. The fulphuric acid ob- 

 tained, by means of barytes, amounted to 36 grains ; the mu- 

 riatic acid to 139 grains. The third vial contained no fulphu- 

 ric acid, but confifted of a mixture of muriate of potafli, hyper- 

 oxymuriate of potafii and carbonate of potafli. 

 Remarks on the 5. Xhe fulphuret of muriatic acid claims the peculiar at- 

 rUticacid^. 'tention of chemifts, not only on account of its compofition, 

 which our previous knowledge would have induced us to 

 confider as impoflible, but on account of the many remark- 

 able properties whch it difplays. As I mean to referve a 

 full account of its properties for a fubfequent paper, I fhall 

 fatisfy myfelf at prelent with the following remarks. 

 Sulphuretof 1. Sulphuret of muriatic acid ditfolves phofphorus cold 



muriatic acid dif- ^jj^ great facility. No effervefcence takes place ; the folu- 

 folves phofpho- .,,-,, , . ..' , 



fus, tion has a tirie amber colour, and is permanent. When eva- 



porated, the phofphorus remains behind with a little fuiphur, 

 and at laft takes fire. When the folution is mixed with liquid 

 potafh, the whole becomes beautifully luminous, and phof- 

 phuret of fuiphur is precipitated. 

 Sulphuret effer- 2. When mixed with alcohol, a violent effervefcence is 

 cohoTr'd^fr' produced, ether is immediately difengaged, and, what I did 

 ether! not 



