THE CARE OF BOTTLED MILK
The certified milk or the ordinary milk that has been delivered to your home and is to be used without pasteurization or sterilization, should receive the following care:
1. It should be placed at once in a portion of the ice box that is not used to store such foods as radishes, cabbage, meats or any other open dishes of food whose odors would quickly be absorbed by the milk. The milk should never be left standing on the doorsteps in the sun, for many reasons: the sun heats the milk, encourages the growth of bacteria, and a passing cat or dog, whose mouth often contains the germs of scarlet fever, tonsilitis, and diphtheria, should it be hungry, laps the tops of the bottles, particularly in the winter when the cream has frozen and is bulging over the edge.
2. It should never be kept in the warm kitchen, as when visiting her sick baby we discovered one young mother doing. In answer to my question, she explained; "Doctor, we do not take ice in the winter time, everything is ice outdoors, so I just set the bottle outside the window bringing it in whenever I need to give the baby some food. I forget to put it out sometimes, but really now, does it matter?" It really matters much, for you see, reader, the milk is first freezing then thawing and it is rendered entirely unfit for the baby.
3. Milk should be kept covered and protected from dust and flies; it should be kept in glass jars which have been sterilized by boiling before being filled, and then placed in the refrigerator. If the milk is sour, or if there is any sediment in the bottle, it is unfit for baby's use.
CHAPTER XVIII
HOME MODIFICATION OF MILK
In a previous chapter it was found from comparing the analysis of mother's milk with that of cow's milk, that they widely differed in the proteins and sugar. The art of so changing cow's milk that it conforms as nearly as is possible to mother's milk is known as "modification." Where protein, sugar, and fat are given in proper amounts, healthy infants get along well; but when either the fats or proteins are given in excess, or when the digestion of the child is deranged, there is often no end of mischief.
There are two groups of milk formulas that are useful. First, those in which the fats and proteins are about the same, known as "whole milk," or "straight" milk mixtures; second, those in which the fats are used in larger proportions than proteins, and known as "top milk"—milk taken from the upper part of the bottle after the cream has risen. And since the larger proportion of babies take the lower fats or "whole milk" formulas, and seem to get along better than the babies who have the "top milk" formulas, we will first take up the consideration of the modification of whole milk.