Note 61 — THE FEEDING OF CHILDREN
Reading edition
In the Walker-Gordon Milk Laboratory, in Boston, milk is sterilized at 175° to 180° Fahr. for fifteen minutes, and it is claimed that this temperature gives the best results for milk to be used within twenty-four hours. If the milk has to be kept a longer time, a higher temperature is necessary, as only the bacteria and not the spores are destroyed by 175° Fahr.
Machines are in use in France which will heat great quantities of milk to about 155° Fahr. and then rapidly cool it. Not all, but nearly all, forms of bacteria likely to be found in milk are destroyed at the temperature of 155°, and the good flavor of the milk is not injured. Such milk is known as Pasteurized milk.