IMPURE MILK.

Dominion, Volume 3, Issue 764, 12 March 1910, Page 14

IMPURE MILK.

AMAZING: RATE 1 AT.'WHICH GERMS' : CAN MULTIPLY. ' ' The chief considerations . which lead' medical men to the belief that London's, , public milk supply-is not carribd on under satisfactory conditions are 6et forffi in an-article in the "Local GovernmentReview," by Dr.'.F. N. Kay Henries, who' shows the amazing rate at which genua can multiply and -develop. under-.fcuitabla conditions. : After 'allowing:' that milk - drawn'. from, a-healthy cow under scrupulously cleanly - conditions is.practicallyfree from.'genns, : Dr. Kay ...Menjries-divides, the', microorganisms generally;associated with nrilk into four!.groups: • • ' The' ordinary bacteria of'.'the soil' aad water,' etc. : " ; Bacteria .which.' .produce inilk' foments* tion.; 'A, Intestinal' micro-organisms .arising rfSailJ .' ( Contamination by manure,. etc. .A' Disease-producing micro-organisms. .■;. . : :The:: first -.two i groups': &e:" quits'-'nrimi-'porta'nt vtfoni; but ■ the/laSt .two,'.caus6'-therncalciilftble results from the ' driuking 'qf impure milk. , : . One;of-the' chief difficulties df;supply.. ing..-milk .to . the, London public in a pure, state is : .the-.length.' df, timd. necessarily taken in its. transference 'from the "dairy farm to the. table of tho 'consumer'; ; London' drawing a portion of its'supply from .such .distant., parts;, as the.' border; counties;; ■ : 'and- Devon and, Wales, from .twelyo 'to'"' twenty-four/ hours ■ ate often' necessary for, the transit.. Experiments, are quoted showing, that-micro-orgasms '.'enormously,-.-with each hour of life'in the'milk. The increase in .one ' experimental, test" is shown • below, f Oganisma . ■ per • l-SOOtb-- :■ " -pint. A- sample examined- immediately. • -• i.afterAniilkihg,v,^v;,:-„....;;....:ii.1;;.;;^9 ) 00(l 40,000' Same,'..sample'9)'.hotfrs .later. ,".L::ui:':120,000 , Saih'e 'sample- afte*;2-thonrsj'.A.v&OOO.OOO v. on >. the • rapidity'-.of v tKe grOTvth'. of' germs- in n,i)V and of • a pint were placed in-three samples of'.the.same milk at different temporatuT.es. . ■ At tht ; erid''.of twenty-four; hours/,the,, results below,were obtained: ... '. ' Sample'at, about-freelzing'pqint' 2, Samplo at temperature of cool .:■ room ' 450,000 Sample at - blood- heat",. ...25,000,000,000 Referring to the diseases which can be spread by germ-infected milk, Dr. Kay Menzies states that more than 200 typhoid epidemics, seventy scarlet fever epidemics,and fort}-, diptheria epidemics have been, triced to this:,scourge of contagion.