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Description - The Nutrition of the Infant by Ralph Harry Vincent

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1904 Excerpt: ... The Storing-and Delivery of Milk.--The next point of importance is concerned with the procedures connected with the storage of milk and its delivery to the consumer. In this respect, the precise temperature at which the milk is kept is of the greatest moment. Conn observed that a specimen of milk containing 153, ooo bacteria per cubic centimetre contained no less than 85, ooo, ooo twentyfour hours later.1 Cnopf and Escherich illustrated this rapid development by the annexed table: 1 Chapin, ' Infant Feeding, ' 1903. At the time of milking, the temperature of the milk is about 1oo F., and as this temperature is extremely favourable for bacterial development, and the medium is the best possible, the rate of development is prodigious. This fact is clearly brought out by Miquel, who observed the development in three specimens of the same milk, the only difference being the temperature. Number Of Bacter1a 1n M1lk Exposed For F1fteen Hours. Per Cubic Centimetre. At 590 F. (150 C.)---100,000 bacteria. At 770 F. (25 C.)---72,000,000 At 95 F. (35 C.)---165,000,000 Chapin quotes instances showing the importance of the bacteriological test. On a certain day in February, 19o2, the count at the farm was 17, ooo per cubic centimetre; at the creamery it had risen to 45o, ooo. This was found to be due to the fact that a small quantity of water used in washing the bottles at the creamery remained in the bottles. After this, all the bottles were sterilized by steam, and the bacterial count at once became low. In March the count suddenly rose from 4,75o per cubic centimetre to 41, ooo. This was found to have been caused by the laying of a new floor in the creamery. Though micro-organisms occur in milk in consequence of the presence of bacteria in the outermost porti...

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