Show the tha inhabitants witantas of a drop of milk where do all the microbes mic robes come from are they already sn in the milk when it comes frona from the cow cowa s udder or do they enter the milk subsequently now there may be cases where alera milk already con bains microbes mic robes as aa it comes from the udder this will be the case with cows but in the case of healthy cows it may be safely asserted that the millas it leaves the udder is p free from germ life and if it were possible to collect it il and save it from contamination there is no mi reason why we should not keep it il fr for an indefinitely long period of time perfectly fresh milk chien has been artificially fici ally rendered sterile by he geatins atin it and ami then kept in glass glas vessels plugged t with cotton col ton wool has been fau found nd fur for years unchanged when IIller i we reflect on the hi hundred indred and one ways in which mill milk may become contaminated with these minute organisms it is hardly to be won dered at that thai it should never be free from them modern investigations have shown that the prest presence pretence pre tence nee of these microorganisms is well nigh universal they are specially abundant in the air of barns hence the hands of if the and the teats of the cows readily become contaminated with the them m falling into such a nutritive medium as milk what wonder bonder that they rapidly develop and soon roon swarm in their millions in eiery drop of milk C M A i ia gla gow herald 1 |