SOME NEW FORMS OF APPARATUS

\\it11 tllc other acids the perceiitages of S, is in each case proportional to the co11. ceiitrations of the total acid in the n~ist~irc at the inoinc...
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;is :.?Ltic p1iij51>iii.)riL-, +::I j . TIie proportions of S, n.heii :iciti,h. .::ch 1):iiiric an(! h!drocliloric iiitcract I\ i t h > I i : l i u i i : tiii,.~.sui;)ha~r. !la\ c' hc~*:i ietl quaiititativel!-. 6 . IYitIi acetic acid and the thiosulpliate 110 S, is produced. \\it11 tllc other acids the perceiitages of S, is in each case proportional to the co11. ceiitrations of the total acid in the n ~ i s t ~ i at r c the inoincnt oi 1)recipitation. 7 . T h e concentration of ionic li!drogen seems tc.1 he a factor i n clctt'rmining the proportioiis of S,A,hut it is evident t!int the)- determilie i: jointl!- wit11 other factors iyliicl! have not !.et I ~ e ntletcrniinetl. 8. It has licen slioivii that the pro,l~)rtioiiof :iiii(.lrplioiis sulpl111r I J Y ~ I tl~icctlh!. Imxipitatioli is tleterniiiietl in part l~!. tlie iiature ( i f tlie iiiteractiiig iiiatcrials, h i t that :i coiltact ciircct of thc \~;Iir~lc licluid in \\.liicli th:. 'IYie ctiiiL; still gi-cntcr efi'cct. 1i i cs r a t CY 1 s 1111111ti r is si1speiided e s e r c i clusioii is that the freslil!- lilieratcd , ~ u l p h u ri,.:ill S,,aiitl that tile reversion to SA is retarded during the I~ardeiiingI)!. the contact nctitlli of the acid or halogen in the liqiiitl. tlificreiit cc~iiceiitr~~tioiir oi tiit. cuiitact agent permitting differing proportioiib of S,, tci O Y t r C c J i l l e tlie tciideiic!. to r c , t.,rL ~ aiitl thus to remain finall!. as amorphous siilpliiir, 111 concIusii:m. i tlesirc t o tliniik Professor Alesniitlcr Smith for :ill of !lis l