P. lIui ter. 5. Mercuric chloride gclntiuiscd tlic mucilnge froin llitchnrntiin 1cif;folin. nnd gnvc prccipitutes with Anogeisscis Ialiyolia nnd 'I'ermitinlin fosretifosn. 4. Stnnnous chloride gnve no reaction with the solutions of Acacia leitcophla~ci, A. fcrriigitiii, A . Jirrnesintin, Biichnnnnin IntiJolier, nnd Odinict ic.rid1er. Ammonium oxnlnte, biisic lend acctute, nail alcohol p v c precipitntes iuorc or less copious with rill tlic sninples cxninincd, iintl, ns nlrcucly inciitionccl,

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... ric cliloriclc gclntiniscd ninny of the ncnciu gums RS well iLs those obtteincd froin otliw trccs. l'rnccs of Iilioaplioric nciil were found in tlic nslies of d l tlic suiuplcs with tlie cxceptioii of zfciicin C~I E C I I I I , A leitcophi~~~a, A . iriollcstii. ririil Ihitiltiriicc cnricgntn, nntl, ulthougli ninterinl WIS insulficicnt for iin cstinintion, it ivns nppnrcntly prcscnt in fuir quuutity in the nslics of Acncict ferrirgitrea, Uniihinin rcfiiw, niid 'Ikrniinaliit tortientosir. I t will further bc uoticcd tlnit nitrogen wns found in d l tlic gurns cxumincil, vnryiiig in niuount froin 0'031 to 0 " E per cent. Froin tliis iiivcstigution it will bc SCCII tliut the Indiiin gunis vary very considcmbly in chnmctcr, nnil us this csuininntion is liy no ~neiiiis crliuustive, I hope that furtlier nttcution will be directed to tlic sulijcct. Ststistics nrc ivunted as to the best locnlitics for tlic growth of these different trees, nnil ulso the clinintic conditious which occur in thorn districts. S o doulrt the geologicul structure of the coniitry ulso innteriully influeuccs thc qudity of the gum yielded by tlic tree ; und if this puper rill leu11 to the work being cnrrieil 011 in Iiidiu, tlierc cnu be 110 doubt thut we sliiill evcntiiully olitsin froin thnt country guius of known rnlric ond suitable for rnniiy induutriul purposes. I)Iscusslus. Mr. I'mwt JI.\clS\\.rs snit1 tliut tlic inistukc inntlc liv those wlio liud taken up the question of gum nnibic and its s d istitules wns tlint they hnil not persevcrctl with the subject. 1Ie wui plcusctl to notice thut I h . Itideal pcrscvcrctl, uutl tlicrc wus need for tliut us tlie various gums known us gum nrubic diffcretl very mucli, nnd uot only cJic1 tlic p u s froui tlilIerent countries ililler, but those froin one country vnricd consitlcntbly nccordiiig to thc nuturo of the seuson. IIe trusted, tlicrcfore, tlint I)r. Ititled aould still continue his rcseurcli. nrr. \\'ATSOX SWTU said tlnit lie lind esnmined the wuste liquors of the sulpliite cellulosc process for prepnriiig woiid 1iiilp, m i l lirid fouiiil u eonsidcmlile nniount of gunis of very udlicsivc iiuture. On evnprutiiiji tliese liquors, the suiuo sickly nu11 tli~iigreedile odour WIS tlevelolicd tluit wns cli:inictcristic of tho. virpours proceediug f r m tho works i~lien the contents of tlic digesters swrc discliurgei?. So long us wntcr rcuiuinecl and tlic guin existed iu solution, tlic sinell reniuincd. On cvnpomtiug to tlryiiess the gum possesset1 no snicll, but on rc-iiisgolving in w t e r tlic solution s u d t 11s disugrecnbly as ever. So fur, nuy metliotl lie Iiutl found efficiwious in ilcstroyiug tlic odour ulso seriously interfered with the gums. 1)r. I~II~E.~I" replying to Jlr. Wutsoii Smith, suit1 thnt lie woiiltl be very glut1 if lie would scnrl Iiiui II snniple of the suhstunce referred to. 1Ie iigrcccl with Nr. ~ltrclC~~nii's reiuurks. ~ UNIVEBSITY COLLEOE, U~O W N L O W YTIIEET. I1C 1111. IiL'STAE. SCII.\Cli-SOJISI~~Il. 0 s prcvious occasions I huvc Iiuil tlic honour of nppenriiig before you as nn ailsocute of the cirltivntiou of licetroot in 15ngluntl nnd Ircland for the puqioso of sugur rnunuf:ictiirc, ii(i tluit industry is conductetl on tlic Contiuent, iind inorc cspcciiilly in Gcrmuny untl ICrntice. Tlie subject whicll I wish to liring before you to-inglit miiy be regirded nn soiucwlint reuiotcly coiineetetl with that of bcetroot cultivutioil, it rcltites to fcrtilisers am1 nriirnal food atofrs. You tire 110 doubt uwnrc tliut ii Dill IYIW iotroiluccd by Alr. Clinplin into the lIoiisc of Couiinona last .luIy in his new oftice us Bliuistcr of Agriculture, to regulate the trutlc in tlicsc nrticlea. Tho Ilill ruus mucli upon tliu siiiue lines us thc Food iuid Drugs Act, wid, us it is virtniilly uii extension of this Act which relute# to the nclultcrutioii of food, untl is UII uttcnipt to prevent tlic udultcytioii of fcrtilisers iinil feeding stuffs prcpared upoii cliciiiical principles, I tliiiik the subjcct should Iinve n strong cluiui upon the uttciition of societies siich ns this. JIuuufucturcrs (untl inore cspcciirlly those ~vliosc husiuess is conducted on scientific priuciples) whould be iiilorhl nn opportunity not only of criticisiiy tlic propouuls of tlie Lcgisluture, but wlien udvisirblc, of Iwinging prcssurc to licnr with II view to their rimendnicnt. 1Jndcr these circuuistnncer it is cleurly our duty, in the best interests of tlie eoniniunity, to mukc our weight us II society felt, by offering wiicli suggestious us those I hiive tlie Iioiioiir of submitting to-night, niitl whiek I hopc niuy be spccdily supplcmcnted by otlicrs coining from those wlio posscss more. oxtcnsivo scientific kirowletlge i i n t l 11irgcr pructictrl erpenonca. lloforo proeeediiig fnrtlier it iiiiiy be woll to rcoite the provisions of tho Vcrtiliscrs unil Feetliug StiiITa Ilill, cinil of. conwc I wliiill lint troalile yon with itn Iegnl phriiseology but iiicrely with u brief &cork of its cltiuses.