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nmmonis, through n filter, nnd tho ammonia wns prcscnt in tlic filtrate to the end of the chnptcr. That lei1 liini to the coiiclusion thnt the irminoiiiir wns present inside tlic fibre of the pnper, nod required time for removul. Tlic difliculty wns overcome by sonking the liltem for eomc clnys in wntcr frcc from ammonin, then, on usiiig thein without drying, tlicy impnrtcd no ummonin to tho filtrnte. IIis rcmnrks w r c mnde. not so niiich ns ir criticism of tho pnpcr, but CIS n hint to thoso present ns to tlic difficulty of rcrnoving soluhle nubwtnnces froin fibres. 

Ik. SAxmr. Iliiiwr, tliouglit tliut the nutliora' stutcnicuts cumc rntlicr lirtc in tlic dey. IIc wns under tlic imprcssiou tiiiit the lnst niimlicrs of the Cl~ei~iicul Ncws niid I'roccetlings of tho Chcmicnl Society coiitniucd n pnpcr by imotlicr rrutlior, who stiitctl tlint the prcscncc of s~lpliuric ucid wns probnbly due to diiiii Ilcing prcrciit in the fibre of thc piper. TIIC~C wns onc poiiit which Iinil not bccii riiisctl by the iiiitliors, nntl which wis niciitioiicd in tlic discussion on tlic origiiiirl pnpcr by l'rofessor IIiirtIcy, iiniiicly, wlicttcr it might not Iiirvc lwcn ponsiblc tlint tlic piipers liird nlisorbcil R I I I ~I I U ~~C ncid froin tlic i r k . Tliut woiild cxoncrntc the riiiinufnctiircrr, biit nt the siimc tiinc render it posuilile for eulphiiric acid to lie present. IIc liiid bccii offcrcd n biiinplc of \\'lintman'* piipcr, niiulc in 1837, i r i i t l hc wo~ild be wry pliitl to prcscnb it to tlic nuthori of the piilar if it coiild bc JIr. Joswi: Arisorm, 11s 11 mnnrifncturcr of onc of tlic piipcr~ niciitioiicd, would likc to stiitc tliut no iicid nliiitcvcr lint1 liccn iisctl iii the iiiniiufiictiirc of his pnpcrs, they wcrc siiiiplg inndc of liiien iind cotton r a p \viislietl iri piirc wntcr, no ncid, clilorinc, or cliciiiiciil of niiy kind being used. IIe coiilil not, tlicrcforc, untlcrvtnnd how Professor lliirtlcy coiild find ncid iii his (arr. Alriioltl's) pnlicr. hfr. W. F. Asiil.:riaos, us one wlio lint1 lind n witlc cspcriciicc in inirking dnimiiigs, would likc to any tliirt lie ~v i i s nlwnys iiiidcr the iniprcssioii tliiit dnrrviiip pnpcr was niii:lc of liiicn, i i i i t l cnrtritlge piiper of cotton. Tlierc WIIS n very jycnt diffcrciicc Iictwccn proper tlrniviiig piiper nrid cnrtritlgc piiper. IIc hnd known the size to iliqipciir from tlic pnpcr, niitl Iiatl in fiict found tlint n roll of dniwiiig pnlicr iiiviiriiibly got fipongy :rftcr 13 iuonths, owiiig to tliiit cniisc. '~liosc wlio wcrc innkcrd of tlruwing paper woiild do wcll to look into tlnrt point. 1Ic did not know wliut tlio piiper mcntioiicd liy Dr. Ifitlciil iniidc iii 1837 coultl be. If Iic ivirs riglit in his suspicioiia, it woulil be little bcttcr tlieii lilottiiig p n l m iiow. Is : , I rccciit issiic of I h j $ I'olyt. .l. 283, 88, we rent1 n coiiiiniinicntioii liy Otto l r i i l l ~i i u s ~r untlcr tlic title, 4' I)ic Jutc cin Ifolistoff fiir Sliicnswollc." 

Dr. I ~I

Followiiig the n~ipcirrniicc of illis coininunicntion, wc obscrvc tlint the joiirnnl '' Industries," 1892, 9313, givCR proiniiiencc to iiii tibstnict of tlic nutlior'a revulta under tlic titlc, " Nitrojiitc, n Xwv I~zplosivc." Tliosc who h i v e atutlicil tlic clicniistry nnil cliemicnt tecliiiology of ilic jiitc lilirc will, with oiirwlvcs, be aiixioiia to discover h i t 1)r. Jliilliiiiiscr lins contriliutetl to ttio iitlvniicc of citlicr, or Loth.* Tlic siillsttincc of tlic coiiiniiiiiicatioii iii question w e tiikc to I)c the cpiiititntivc study of noriic foiir prcpirmtioii?; of the wcll-kiiowii csplosivc iiitnites obtiiiriiiblc froiii this fibre. The coiiditioris of iiitrntioii " chosen wcre ii coinlinrirtivcly loiig iiiiiiiersion iii tlrc iiitnitiig iiciil, tlio coiiipo~itioii of wliicli (ratio IISO, : IISO,) \vns viiricil, ns WIIY iilso tlic proportion of ucitl to fibre. \\'it11 tlic long csposiirc (8-4 Iioiirs) to tlic nitriitinp ircitl, tlicro is, as the iriitlior stirtcs, ii i1isintcjir:ition of the tibrc biind~cs, niitl tlic iiitrntioii is iittcndctl by sccoiidiiry decoinpositioii irnd converriion into proilucts soliililc in tho ncitl iiiixtiircs. Tlicso fiicts wrc fully tlescribed Iiy ourselves SOIIIC few yciirs ngo (Cliciii. Soc. J. 55, SO?), iiiiil. from tliein wo coiiclutlctl tlint the highest yieltl of iiitnitc is reprcsciitcd by i r i i iiicrc:iw of weight of 55 per cciit., correspoiiiliiip iipproxiiiiiitely with tlic forrnntioii of II tctniiiitrntc of tlic ligrlorellirlose, rvliicli liitfcr wc foriiiii1:ite for stutirticril Iiurposcu 11s C l ~l i l s O ~ 
In this product tlic jieiienil striictiinil fcirtiircs of thc origiiiii1 tibrcs iirc pscrveil. This high yiclil is only olitiiiiietl with cspoaiircj of short duntioii : in fnct, nftcr 15 iiiiiiutcp' iiniiicrsioii nt the ori1iii:iry tuiiipcniturc, dcconipositioii is iisuiilly seeii to ciisiic with libcrntioii of gus mrl tlic ap1ic:i~iiicc of nitrous fuiiiw. 
111 JIulhiiuser's erpcriiiiciit* it is evident, froill tlic coiittitioiis of tlic treiitiuetit niid froiii tlic low yicld of tlic ]irotlucts (130 per writ.), iuid from thc disiiitcgnitioii of tlie librc bundles, tliiit such sceoiiiliiry dccoiiilmsitioiis took pliicc, iiiid tliiit tlic proiluets p ~b i i l ~l y , tlicrcfor~., iipproxiinntc to tlcriviitive3 of ccllirlosc rtitlicr tliiiii of tlic i i p occllnlose, the iiiorc ositli?;iilile " iiori~ccllulosc " or ligiioilo coiistituciits Iiirviiig siilfercd tlccoiiipodioii. 
'Tlic iiiithor. in fnct, rcgnrtls hi* product 11s 11 ccllirlosc ~iciitiiiiitr~rtc-C~,II~,O~(OSO,),, h i t iipliciirs to coiisiilcr it uiiiicccsrury to ueeoiiiit for tlic iutcriiicdiirtc ~t c p Iiy irliicli such II product hiis l)ccri obtiiiiictl froiri II couipoiiiitl ccllulosc (of thc iipproxiiiiiirc foriiiulir tr .C121~i30,). \Vc liirvo siiggcsteil the iiliove cspliiniitioii ou tho biisis of our otvii rcscurclics, iiii11 h o p tliiit it iiiiiy reccivc tlue coiisideriitioii iu iiiiy fiirtlicr iiivcstigiitioiia wliicli tlic author iiriry ciirry out oii tlic siilljcet. 
Froiii the poiiit of view of tcclinologicul iipplientioii, wo Iiirve iilwiiys fiiiletl to see iiiiy iulviintii~e in tlic lignified tcstilc tibres us riiw niiiterials for csplosivc nitnitcw. 
Tlicre iirc n Inrgc iiiiiiibcr of riiw iiintcriula iipprosiinirtiiig morc or less to ir pirrc cellulose which ciiii be olitiiiiietl lit from 101. to 251. ir tou, iinil wliicli will yield ou trciitiuciit from 150 to 170 pcr cent. of cxplosivc iiitnitc, superior in explosive power nod stiibility to tlic protliicta obtniiiirblo froiii jiito CI siorilitr. Iii our opinion. tlicrcforc, tlio npplicntioii of tlic hitter ia not witliiii tlic rtiup of prircticiil coiisidcriition. On the other bnnd, thcro nrc ccrtnin rnw fibrous mnterinls which yieltl nitrates of very ditinctivc ch;iructcriatics, e.g., the Sunn licmp (Crotalartn .Tiriicecr) untl tlic hIndnr fibre* (bnst fibre of Cctlotropia g i p t t c n ) . These ccrtuiuly invite ' invcatigiition, both from the wientilic nntl practicnl point of view, nntl 00 b o p tbnt Dr. .\IUlhiiurcr will extend Ilia irivestigntions to iiicludo thesc nnd other miv mnterinlt~, ns nlso to cleiir up some of the p i n t s wliicli he linn left untouclictl iii Iris study of the "~iitriition " of the jutc fibrc. THIH bnlniicc nima nt too ciitls. Onc, securing grcnter iiccurncy by rcnson of iion-cxpo~rc of tlic working pn.rt3 (luring the opcrntioiis of \~eigliing. The cecood., prcscrving tlic wciglits from the incvitnblewcy nnrl tcur \rliich coiistnnt Iinnilliiig ciitnila, irnd nlso to fncilitiitc the wpcccl nt rliicli \vcigliing cnn be Iicrfornicd. 

Ur. J l ~~l l ~i i i i s ~r

l'lic Iienni is rtiflencd in nn iipismd direction, niitl tlic possibility of its bentling rctluced ton ~niniiuum. Tho pliincs nrc ull of n iitc. 
Tlic weighs nrc nintic to rest, \vlicn not upon thc pnii, on forkctl lcvcra worked from the outside. The cu:uc inctliod ilc cniplnyd for thc ritlerr, so tliut tho minimiim of cxpomro niid tho ninximuni of coiivc~iiencc urc guiiicd. A provinioiiul specificiition liru bccu filed. 



  ' n vioww of tho coiisti!iitioii or tho jiito Illiro iu LL clicinienl indiviiliiiil'uru Iiiirdly rccoiiciliiblo $111 oiir owu (Cliuiii. 


Gcorgu

  Cniig (Clieni. Xccvr, 60, 227) atntcs tl~rit by fiieing pure silictr or siliccdiis iiiiitter with iiiixcd ulknliiio wrbouutca, deconi~msiiig with IlCI, nnd cvsporuting t o dryncs~, iiot nioro thun 97.5 per cent. of the ailicn cun bo foiiiitl in tho innolublo residue left oii dissolving up, nnd this stiitciueiit hun lcil Jumes 1' . Gilbert to iiinku o uumber of expcriineiit~~ with siliciitea of diflereiit coiuponitiona, tllo resiiltn of wliich iiro Civeii in n vulunlilo ~)iipcr to bo fouud iu tho Clieiu. Ncwn, 81, 270 niid 281. Gillicrt'r csperinicnte aliow tbut ill tho nnnlyah of uiiicutcr coutuiiiiiig ,\l,03, but wLicli uro priicticully frco from CuO uiid 1\IgO, dcliydrutioii, even lit tho high tcurpcmturo of 280' C., will not pMvcnt a o m uiilligrnuiucr of tlio uilioa 


I ~K A I . tlioiiglit it \voiilil bc intcrcstiiig to scc wlictlicr the piper rofcrrcil to coiitiiiuctl iuiy iilum, i.c., wlicthcr the rixiiig liiid Iircn rciidcrctl iiiitiqtic by tlic addition of iiliini. A s tlic pnpcr rcfcrrctl to liiitl liccn cxposed in n fitiilile for ?O ycsrs, uiiy sulpliiiric iicitl which niiglit havc Iiccii Iircseiit would probably be found 11s niiiiiioniuiii sull~liiitc. hIr. It. G,\i.r.os czplniiicd thnt the rcusoii why piilicr Iicciiiirc rnpoiigy wiis tliiit it \viis not kcpt properly. l'npcr \vylis u most tlclicntc siilistiiiicc to Itccp in workiiig order, und lifter n fcw yciira the size would bc iiffcctcd by ilniiip, iiiid spoiigiucss und spottiiicse would ensuc. A h . BWAB, in reply, eniil thiit with rcfcreiicc to A h . Thorp's obwrriitioii IIS tc the tlilticulty of rcuioviiit! clic~nicnls from fibre, Iic noiiltl likc to poiut out tlint 1111s dilliciilty

  cliicfly ripplied to woliitions of 1111 ulkirline nnture. It WILY well kiiown tlint it wns cstrciiicly hard to reinovc ciiustio soilir froni cellulose, but it w i n ir fii~uplc iiiuttcr with ncid. 



Tlia process to which r i i p wem tiubjcctecl WIIR IIIUCII iiioro driistic tliirii iiny Iirliorirtory treutwcnt. Tlic riiga wcro broken up iiiitil tiicy forined irlinost

  . Arnold would not wish it to be underntood tlint no clicmi&ih were used in tlie sizing. (Mr. Arnolil reinnrkctl tlint chemictrls iucrc used in thc niziiig.) Ifc (Nr. lkvan) \vould point oiit tliiit ccrtnin niukcs of pnpcr, such na Jopson'n, not only conttiined no frcc ncitl, h i t nctunlly guvc n sliglitly iilknliue nction to ccrtnin rcngcnts. 



n milk iii tlic water. lfcfcrriiig to I)r. Ifitlciil's rcmiirkn IIE to tho posaibility of tho piipcr king nciil oii uccouiit of tho uctiou of siilpliiiroi~s acid derived from coiil-pis, i i tho fiicts were IIII 110 (Dr. lticlcul) !ird stntcd, l'rofessor Hartlcy ought to sct tho nintter riglit, so na to esoncrnto tlio piper-miikcr. 111.1 ( A h . Ikvuii) presunicd thnt Ah. Arnold's atirtcnic~it tliirt no olicmicnla w r o iincd in tlie inniiufucturc of his Iiqicr refurrcd to tho lirst trcutnieut of tho rugr. 110 N U ~~O Y C ~ of 1rny use to tIlC1ll. . --lfr--ESI' 
LOSI\'I~ SITILhTI<S FROIC TIIIS JUTIS FIIIIIE. III' C. Y. CItOSR ASIJ X. J . IlEV.\S.

  

c. If. Llulloy. H. P. Cnrpciitor. G . E. Duvis. 11. Grimalmw. Uurold U. Dlron. J. Gmssmaiiii. 1 ' . Ilnrt. A. Liebi~unii. Sir 11. E. Ibwoc, 31

  

.1'. C. 
Truby. D. Wntron. Iloii. Local Secretary : J. Cnrlor null.

  
	Bnnk Uouw, Tlio CliU, lfi(t1icr Urougliton, JfaflChC~t6r.

-Notirm 
of 1% 1orj aiid Coinlnuiilcntloiir for tho Ucctlii~~a t o bo wut to tho b\ mmtury. Mecling held Friclny, Felrirciry 5111, 1892. - MH. IVAN LEVlNriTEIN 111 Tlll. CIIAIII. A D I E C ~S U I O N took pliico on tlio Xcw Iliiilding Ilyc-Lnws, 1890--1891, iswued

  by tho hlunchcwter Corporntion, in tlio coiirso of wliicli it VUH pointd out tlint uniioynnco niid iiijury roulil Iiu ialictcd ou tlrorc crrglyrcd iii tho choluictrl und tillicd trudcs if they wcro coiiipellcd to aubinit plnnn of 



upparutus niid pliint bcforo crcctiug tlicni. It w i n also contcudetl

  tlitit tho word $1 Iiiiiltliiig," iic uccd in tho 



byc- 11i\v~, ivnu iiiteiidcd to refer only to public builciings, IVIVC- Iiouser, sliolis, uiid rcsidc~iccs, uutl not to clicniicirl rorka 800 Iblmort oii lndiiiii Pibrra by Cmu, UCVUU, and King, E, id Y. N. Llpoii, 1187. or

  tlic plnnt tlicrcin I nnd n dcsirc nns exprcsncd to obtnin nn nutlioritiitivc definition of the tcrni " building" from tho Corporntion. Fiiiully tlic following reaolutioiis werc pnsscd :-1. "'Pliiit, in tho opinion of this iiiccting of thc Jlnncliestcr Scction of the Sooiety of Clicmicirl Intlustry, nnnoyniice will lie cnused nntl injury inflictcd on 011 persons cngiigcil in tlic cliemicul aiiil ullietl industries if tho byc-III~VH of the AInncliester Corpnrntion, 1890 niid 1891, rcfcrriiig to new streets nntl I~riildiiigs be interpreted by tho Corpomtion h~ nloo npplicnblc to plsnt." 2. '' rlint thc Chemicnl Scction of tlic Nnnclicstcr Cliitnibcr of Comnicrcc be retlucstccl to consider tbc Dye-I m ~c of tlic Aluuchcstcr Carponition of 1890-1891, refcriiig to ncw streets niiil biiiltliiigz, YO fnr iis tlie enme nRcct the interests of tliosc cngnged in tlic clicriiicnl nnd allied intliistrieu." 


	1 5 1 c i t . t ~~.
	This Joiiriiiil, 1892 (k'd~riinry

Siiiiilicr), pngc 131, col. I, 13 lines froiii liottoiii of

  p g c , nfter tlic word "i~ioiutiire,'~ iiisert the followinp :-'I makes it nppeiir prol~iIi10 tlint tho netion is oiic of osiilntion. 'Ilio followii~g word l~Tlirit," to begin n frerli sentence, iis '' Tliiit iiiodiflention," kc. 


	Tliia Joiiriinl, 1832 (Jnnunry Sumbcr), pngc 8, col. 1,
	tlio lust linc should rend :-
	,, Iiiiflltcn

*d. 078." aottiirgliarn dboictort, TIII: iwimmos OF SII,ICA IS CI,AY. IIY L. AIICIIIIUIT, F.1.C.r I'.C.H. 1)uitisti tlic lust few yeurn, ut Ieiist two writers huvc cullccl iittciitioii to errora iiiliercnt iii thu iisuirl ~~roccss for

  dotermining wilicii in Rilicntez, errors wl~icli Iiaro iiot rcceiitly been tliscovercd, but nguiiist ~diich we Iinvo long becn wnrucd, h i t pcrliirps not sutlicicntly, by Frescuius nt uny
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