CIHM Microfiche Series (■Monographs) ICIUIH Collection de microfiches (monographles) Canadian Instituta for Historical IMicroroproductiona / Institut Canadian da microraproductions historiquas Technical and Bibliographic Notes / Notes techniques et bibliographiques The Institute has attempted to otJtain the best original copy available for filming. 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Opposing pages with varying colouration or discolourations are filmed twk» to ensure the best possible image / Les pages s'opposant ayant des colorations variables ou des decolorations sont film^es deux fois afin d'obtenir la meilleure image possible. r~^ Additional comments / L-^ Commentaires suppl6mentaires: Pagination Is as follow: p. [2], [ITSHSO. This Ham is flbnad at tiM raduetion ratio ehackad balow / lOx 14x 18x 22x 26x aox y 1 12x 16x 20x 24x 2ax 32x The copy filmed h«r« ha« b««n raproductd thanks to tho gcnarotity of: Library Aricultura Canada TtM imagas appaaring hora are tha bast quality poaalbia considaring ttie condition and lagibility ' : 2ho original copy and in kaaping with tha filming contract apacif icationa. Original copiaa in printed paper covera are filmed beginning with the front cover and ending on the last page with a printed or illustrated imprea- sion. or the back cover when appropriate. All other original copiaa are filmed beginning on the first pa'^e with a printed or illustrated impres- sion, and ending on the laat page with a printed or illuatratad impression. The last recorded frame on eech microfiche ahall contain the aymbol -*- (meaning "CON- TtNUED"), or the aymbol V (meaning "END"), whichever appliea. Mapa. platea, charta, etc.. may be filmed at different reduction ratioa. Thoao too large to be entirely included In one expoaure are filmed beginning In the upper left hand corner, left to right and top to bottom, aa many framea aa required. The following diagrama illustrate the method: 1 2 4 5 L'cxamplair* IWmt fut rtproduit grlc* A la g4n*roflit* d«: BibliothiqM Agrieultura Canada Lm images suivantaa ont 4itt raproduita* avae la pluf grand toin, compta tanu da la condition at da la nattatA da I'axamplaira filmA, at an conformity avac laa conditions du contrat da filmaga. Laa axamplalraa originaux dont la couvartura an papiar aat imprlmte sont filmis an comman9ant par la pramiar plat at an tarminant soit par la darnMra paga qui comporta una amprainta dimprassion ou d'illustratlon, soit par la sacond plat, salon la cas. Toua laa autraa axamplalraa originaux sont filmte an comman9ant par la pramiAra paga qui comporta una amprainta d'Imprassion ou d'illustration at an tarminant par la darnlAra paga qui comporta una talla amprainta. Un daa symbolaa auivanta apparattra sur la damlAra imaga da chaqua microficha. salon la eaa: la symbola —► signlfio "A SUIVRE". la aymbolaysignifia"FIN''. Laa eartaa, planchas. tablaaux. ate, pauvant Atra filmte i daa taux do rMuctlon diffirants. Lorsqua la document ast trop grand pour Itro raproduit an un saul ciichA, 11 ast filmt i partir da i'angia aup4riaur gaucha. da gaueha i droita. at da haut an baa, an pranant la nombra d'Imagaa nicaaaaira. Laa diagrammaa auivanta iilustrant la mithoda. 2 3 5 6 ••e»oeorr mmwtion mr omit (ANS) and ISO TEST CHAUT Mo. J) ■ 78 la itt |3J ■ 2.2 |3^ lia u lis |Z0 u L 1 IL6 ^ /APPLIED IM><3E U> 'SU EotI ttain StrMi ~~ ("6) 482-0J00-p*„„r^ ("«) 2n - sam - f„ 8 OEORQE V SESSIONAL PAPER No. 3Sa A. 191S SOME OBSERVATIONS ON HADDOCKS AND FINNAN HADDIES Relating to the Bacteriology of Cured Fish By Principal F. C. HARRISON, D.Sc, Macdonald College, P.Q. HMiJBiJj*'- ^»il-l^.-;r'?'*'tj 23365— iJ OTTAWA J. DE KABRlKJUKRIK TACHfi PRINTER TO THE KINOf MOST EXCELLENT MAJESTl 1U8 t S GEORGE V SESSIONAL PAPER No. 38a A. 1918 XI. SOME OB8EBVAnON8 OR HADDOCKS AND • PWHAH HADDIE8 BEIATIHO TO THE BACTEMOIOOY OP CURED MSH. By Princip.! F. C. HAl •HWU. D.So.. Macdon.ld College. P.Q. i^;.^,r;f:™;S':;:r;;\:s:;;:',-:;.ri-;:,r;:;:i-;-;;r'"^;; •< '■.-■. ot «l,.riluu(J water ami thoroiml.lv Hli.ik.n. '''»'•■* wtfe mud., from tlif .lil.iti.m. In.,,! 1 to ,1 ..... I...i.,i, „ ..I . , i .. I'lnt.'s wire iiinde with:- ' "" "" ' '"' '■'"'' I''"'*' llnildOi'k ava wnlt.i K«liillnr H^ef pcpton* ■«. Wilier gelatine. ..... v. 'ii '"'',,' ""' Uii'loiie lllmua neu water jelatlne ]...,.. Iz .'. nn„.w;ifi.r;;::;::iw:"^^'''" '"-'■'^'•-•'v.'«^h w;.:„,„t....: ..;, .. iar.e At tl,.. M.m.. tin... „ n.i..ro, i...,l ...v„minHtiuM „f ti... iut..,ti..ul .•unt...,t. wa. iiih.!.- unu no .siunllii. « "' ''H.-tcrinl cmti'iit ol t i,. tw- hv H.l, «-.i* ,ii..ll,.r T i« of 1>.> tot..l ntnnber ot colonie. from oa.-h fi,h W.mffod to tl.i- Krou,. M„ . .'f . at the station, and also from somo spoilod haddockreleSromp '"'''" ' """■' A shor a..oou,.t of the n.ethod. omplo.ved in sc...urinp tl... tish^.^l. ..f i.„.., .t lnl>..rntor.v ..t a tem,«»rnt..re rn..pinK fr. r«^^^^^^^^ '"''■'■ ''*"' '" ""' Other piwes of fish wore obtained thu< • Tl.n ».,w.L-l. . fully n.is...l. and a portion of the fl^h he .onti „ ~"'" ''"A""^ '">'' »»"■ ""I- '"r.- ,.ie..e seized with lru,^o,uZ!:t'r U'':!;";^.;;;;: ".;;|; ; ^;r"'^i 'f'- ""^ I name until well s.'irr.-h.d on the outside. Ht.d then dropped into i, ,.„]tnr.. flask. 1W Ufl'.iltTMKST Of rut SAV.U. HKHMVK • OeONOC V, A. t*1S All rtii*!(* thu» iiKMuUted wt-ro Im-UI at riMnu tcmiHrttturi-; iwtntyfoiir In iir« luttr ■It thowed turbidity. Oi-luliiio aud sKar |iImIi<* wi-ro miul«! from tin; viiriou* rt»»k», himI tlif ouloiiif* whioh d«!Vflo|ifd were icdiilitl in the uaiial inaiiia-r Kri>iii tlii* iwninf u iiiimlH-r of orgaiiiitnM win- «(H-urelttiiicnt to a number of fi»h deaUm uiid, ill n'«|N.ii-«' to u r»> lift for i<|k»il«'»i ti»h. a Uix of »|t(iiU>d " hmldirn " wait nivitl duriim tin- .Mur f till wiiittr. Th«y wt-n- •itvi-nd with u >MMii-«liiiiy UMwtli, Kivinii u wutiTiuMikt-d iiinieoraiiw. At nunifroun |>liii't» lla-ru wi-re whitiih point* rcMnibliiiK bui'tcriul fojoiiie*. Tlw Hwili wii» Koiro-whnt miftpm-d, and the ti»hy odour iiiuili iiiti-ii- itiHvd, From Kilfliiiii' pliitt-x imuK' from tlii« (i«h tlic writer mcurt-d llie linm'fyiiiK barilhu alri-ady iiii-iitioiiitl, and larjfp iiunihi-r* of Toruhr. 1 In- iiioHt KimiiHcHt.t i'.iot. thtrpfori', in thix pifcn of work i* the |irciM'iif fr«>«h had- doiled. The iiinount of Milt mid the diiriitiim of the »niokiiiK jMri.«l to iwrodmo Hi^uUi luiddie* of ciiod Haviiiir iirt t sutHeient to kill the orttmii'inH prewiit on the Hsli iftir tlie.v lire (fiilt""!. mid the iiiitimptie iietion nf wilt mid - "ke in not gutticient to inhibit the i-low Kmutli of iirKiiiiiiiniii. The writer, after ("tiidyiiiit the nietliodn of eurinsr hiiddoek. hii>< Ik-pii impresned with the iteiienil ciireh-j'iie.x displayed in allowiiiK ti^li to nniiiiii for iiiuiiy liourx exixwiil to wiinn .lir mid 'Uiilitflit Ufore ftottiiiir mid miltiiiir True, tluit thew oli*.rviitioin were niiide iinilep hUninier eoiiditionn when ennipiiriitively few liuddoeks are eiireil; but the el!e.t of Kueh treutlilelit re*ultj» in u liirge iiiiTen«e in the iiiiinber of bneterin pre- M-nt 1)11 the ti«li. mid eoimeiiiient (|uieker i>|ioilinK of thi' Hiimked artiele. In winter tlie:rtuiiity of Htiidyiiiir winter eonditiuii!*. be lin* iM-eii imprei>»ed by the Rfi'iit diflfereiiee in flavour bet«e«>n fi«h suited and smoked at the biolo(jicol station during the winter of IIM.'-H!, and those tMiuprht from varioii* dealers in Montreal. From one nr two experiments on the pereentaRe of dry matter, total ash. mid ehlori.les as XaC'l made on a few flub s<>nt to this laboratory, the writer siinBists that ?uili determinations should \>c made of a series of tisli for whieh the mnoiint of salt iiM'il. the saltiiifT and smokinir pi-riml were known. I'lirther. from the baetiTiolopienl ..tmiinoked under winter eoiiilition». May, 1916.