tioner also produces tho smallest s u crystal (0005 mm. square) in the form of f o n g i t " used ns the centres of chocolntecrenms, nnd obtnined by rnpid cooling of n supcrsnturnted solutioir, with vigorous ngitntion. Mr. Hcriot, in concluding suggc~tcd tlint 110 supersnturntc~ solution wouic1 crystn~ise u n~e s solid pnrticles imssiblv ultm-microscopic, wcro prewnt, and niso tliat, by t~i o use of gelntiu, Such particles miglit lm detcctcd by n culturo " mctl~od niinlogo~s to t h a t used by

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... ho bacteriologist. I n reply to qucstions, 110 csplnined that rnffinose wns o d y foiiritl in bcet juice niid criusccl tho formntioii of n c e d l~h n p d crystnls. The rclntire sweetness of diflercnt sugnrs cnnnot lm determined l)y plncing the crystnls directly on the tongue ~ICC:IIIFC tlie saine sugar tlieii nppenrs less sweet wlicn in the forin of large crystnls tlinn when cruslied to n powdcr. Tho only rclinblo method is to trlsto dilute solutions, of known conccntrations, of tho sugars t o be compnred. EDISIIURGII AS11 Ei\S!r O F SCO1'LASD. Tho fifth orcliii:iry meeting of tho xssion wns I i~l t l 011 T W m i n r~ 13 in tlic Xew Clieniistry J~nborntories of the University, King's Duildings. Eclinburgli, 1)r. TI. E. \\'ntt presiding. Prof. Sir Jnnics \\'nlker gnrc n general d w r i p t i o n of thc plan of the new 11uilding.s nnd tlion conducted n tour of the Inborntories. In moving n roto of tlinnks t o liim the clinirninn referred to the splendid facilities proriclcd for tlio tmcliing of clicmistry in the university. Tlio sccrctnry nnnounceil tlint the Scctionnl coniniittec proposed, sul)ject to the npprovnl of tho Council, t o ndniit Associntcs t o tho Section, niid this ir:is unnnimously agreed to. A joint dinner wns lield mitli the Locnl Scctiori of tho Institute of Chcinistry on Fcbrunry 29 in Igcrguson anti Forrestcr 's ltcst n u rn 11 t, IMi~iba rgl). Dr. A. Jmdcr, vicc-clinirnmn of tho Tmnl Section of tlic Tnstitute, presided, nnd 39 nicmbom and guests w r o present. After tlic loynl toasts Blr. A. 3Initlnnd, of Jlessrs. J . and G . Cos, proposed tho I'rofcssion of Chemistry," wliicli wns replied fo by 1)r. T. IV. 1)rinliwntcr on I)clinlf of tho ncnrlemic choniists, nltd Itg Jlr. \\r. A. l\'iIlinnis 011 bch1f of iiidustri:il clieniists. tlie tonst of 6' lie Ladies." wiiicli a n s nclinoalefKi by JIrs;, TT. E. \\'ntt, Dr. Dohbin tlint of ' I Tho zirtists \vlio lind tnkeu mrt in the musicn!, pro-