Cooling in the air or in an ice box requires from two to four hours, and during that time a great many of the undeveloped germs may mature and greatly injure the keeping properties of the milk. In the cold water, milk can be cooled in from ten to twenty minutes if the water is frequently changed, or if ice is added to the water.
[ MODIFIED MILK OF THE MILK LABORATORIES ]
What is "modified milk" of the milk laboratories?
It is milk containing definite proportions of the fat, sugar, proteids, etc., put up usually according to the prescription of a physician, who indicates how much of the different elements he desires. The most reliable are the laboratories of the Walker-Gordon Company, which has branches in many of the large cities of the United States.
This is an excellent method of having milk prepared since it can be done with greater care and cleanliness than are possible in most homes. It is besides a great convenience if circumstances make it impossible to prepare the milk properly at home.
The laboratory should be used for infant feeding only by one who is somewhat familiar with this method of ordering milk.
[ PEPTONIZED MILK ]
What is peptonized milk?
Milk in which the proteids (curd) have been partially digested.
How is this accomplished?