of acute illness among infants. Next to the feeding-bottles it is the
one thing in the nursery which should receive the closest attention.


THE MODIFICATION OF COW'S MILK

_Can cow's milk be fed to infants without any changes?_

No; for although it contains similar elements to those in mother's
milk, they are not identical, and they are not present in the same
proportions.

_Is this a matter of much importance?_

It is of the greatest importance. There are few infants who can digest
cow's milk unless it is changed. To change cow's milk so as to make it
more nearly resemble mother's milk is called _modifying_ cow's milk.

_How is this milk whose proportions have been changed distinguished
from the original unchanged milk?_

The changed milk is usually called "modified milk"? the original
unchanged milk is known as "plain milk," "whole milk," "straight
milk," or is referred to simply as "milk."

_What are the principal differences between cow's milk and mother's
milk?_

Cow's milk has a little more than half as much sugar; it has nearly
three times as much proteids and salts; its proteids are different and