STERILIZED MILK.

Milk to be thoroughly sterilized and germ free must be heated to the boiling point (212° F.). This may be done by putting the milk into perfectly clean bottles and placing in a rack, in a kettle of boiling water, remaining until it reaches the necessary degree of heat. The bottle should be closely covered immediately after with absorbent cotton or cotton batting in order to prevent other germs getting into the milk.

PASTEURIZED MILK.

The difference between pasteurizing and sterilizing is only in the degree of heat to which the milk is subjected. In pasteurizing, the milk is kept at a temperature of 170° F. from 10 to 20 minutes. This is considered a better method for treating milk which is to be given to young children, as it is more easily digested than sterilized milk. All milk should be sterilized or pasteurized in warm weather, especially for children.

CHEESE.

Cheese is one of the most nutritious of foods, and when meat is scarce makes an excellent substitute, as it contains more protein than meat. Cheese is the separated casein of milk, which includes some of the fats and salts.

EGGS.

Eggs contain all the ingredients necessary to support life. Out of an egg the entire structure of the bird—bones, nerves, muscles, viscera, and feathers—is developed. The inner portion of the shell is dissolved to furnish phosphate for the bones. The composition of a hen's egg is about as follows (Church):—

White—In
100 parts.		 Yolk—In
100 parts.
Water84.8 Water51.5
Albumen12.0 Casein and albumen15.0
Fat, sugar, extractives, etc.2.0 Oil and fat30.0
Mineral matter1.2 Pigment extractives, etc.2.1
Mineral matter1.4