Acetic Acid per
Gilt., "011l1. 1 t tlicrcforc iippcnrs that pcriiiniignriiitc soliitioiis which Iinvc bccii previously ~vcll boiled slioiild lie tested oiicc n fortiiiglit to nsccrtniii tlic niiioiiiit of cliiingc, niid tlint the iiiiioiiiit of cliiiiigc duriiig this period will iiot cscecd tlint of csperiiiicutnl error nud iiiiiy bc iicglcctctl. Ter Cent. of Acetic i\cltl it1 lO/11 iir Retort. Acetic Acid iu l0/11 I)istilliitc. 1)istilliitc to tliut 3Ir. J. CAIITEI~ 1 1 ~1 , ~ snid tliiit lie lind Itelit soliitioiis of pcriniiiigniintc for iiiniiy uiontlis, niid Iind foiiiid the cliniigc to be very slight. h'eiirly 30 gcnrs ngo 1)r. l'crcy hnd &speriiiiciitctl upon this very subject, nud iii 3Inrcli 1SG9 lie prcpnred II Iiirgc qiiniitity of Iicriiiiiiigiiiiiitc, niitl on tliiit clntc lie obtniiicd us II iiieiiii of four cxliwiiiiciits ii stniiiliiril of 9'864 (1,000 griiiiis of soliitioii 5 3'854 griiiiis Vc).
Tlic soliitioii wiis iigniii stiiiidnrdiscd iii hlnrcli 18G:l, n i i d thc iiienii of two esperiiiieiits gnvc ii stiiiidiiril of 9.797 (10,000 grniiis of solution = 9 . 7 9 i grniiis re), or 1111 iiltcriitioii iii 19 iuoiitlis of oiily .097 griiiii.
1 lierc \vns no iicccssity to boil tlic soliitioii of pcruiniigniintc if piire distilled wntcr svcrc iised. , 1 .i-m 4'E30 ~ 4'75 --3'705 9 ' * 1u 3'75 63'41 3'07 j 63-59 THE RA'l'E OF DISTILLA'l'lOS OF ACE'I'IC ACID. 11Y J. A, WILSOS.