SOt^'TION OFSVLPHUR IN ALCOHOt. ]^9 



■^te experiments mentioned In my firfl note, viz. nicely one-thirteenth 

 vvafhed, and one ounce of rectified -fLilphuric ether, whofe fn "he lieht'-^and 

 weight was 0.7396. Having fecur^ the mouths of the mat- only onc-feven- 

 traifes with luting, I put one in a very ligiu place, and the ^^^J^^*^"^ ^^'' 

 other in a dark place. I fliook them every day, and at the 

 end of a month, filtered their contents. On examination the 

 ^iwo fulpiiurated ethers obtained by theTe operations^ prelented 

 the following characleriftics : 



The colour of the ether expofed to the light was Scarcely 

 ■changed; it had a powerful hydro- fuii-hurous fmell, and its 

 tafle was difagreeable, arid likewife hydro-fulphurous. 

 Mixed with diftilled water, it precipitated nothing ; but I 

 j-emarked that the water difTolved a much lefs quantity of it 

 than when pure. In proportion as (lie ether became volati- 

 jifed, the fuiphur formed a whitifli fcum on the-furfaceof the 

 liquid, which at length was precipitated to the bottom of the 

 glafs In which theex.periment was made. (I (liall hereafter 

 mention the quantity of this precipitate.) Put iji conta<gt 

 with white metals, it deeply blackened them. (Care muft 

 be taken in this latter experiment to cloTe exadliy the mouth 

 ■of die velfel in which the metals are placed in contad with 

 fulphurlc etlver, on account of the great tendency of ether 

 to be converted into gas by its attraftion of caloric from fur- 

 founding bodies.) When mixed with a folutlon of acetite 

 of lead, it gave a pretty -conliderable black precipitate. 



The fulphurated ether prepared without light, pofleflecj 

 all the properties ©f the other, but in a lefs degree. It alfo 

 was lefs impregnated wilh fuiphur ; for, on a repetition of 

 ihe experiment, and carefully weighing the products, I 

 found that each ouace of the ether prepared in the light coi)- 

 tained .38 grains of fuiphur j whilft Jth?itprepa;-ed in the dark 

 lield only 29. 



Third and fourth Experimertts, 

 Having proceeded as above defcribed, with nitric ether Nitric ether by 

 weighing 0.9088, I obtained. an ether whofe colour was in '^^ '"^'"^^'■'=^^- 

 ?io degree changed ; Its fmell and tafie, though hydro-ful- nearly one 

 phurous, were not fo powerful as thofe of fulphurated ful- ^wenty-fecond' 

 phuric ether; mixed with diftilled water, it prefeiited the jn'the light%n4 

 fame phenomena, but depofited a lefs quantity of fuiphur. ""'X tvyenty- 

 It difcoloured whij.e metals jefs forcibly than the preceding j^k. 



ether; ^"~ 



