are intended only for guidance in feeding children who
are not suffering from any special disturbance of digestion;
directions for such conditions are given in a later chapter.

_What are the most important points to be remembered in modifying
cow's milk for feeding during the early months?_

That of the different ingredients of milk the sugar is most easily
digested; the fat is next; while the proteids are the most difficult.

_What relation should the fat bear to the proteids during this
period?_

For most infants with good digestion the best results are obtained
when the fat is three times the proteids. However, this is not true of
all. There are many healthy infants who are unable to digest this
proportion of fat, and who do much better when the fat is made only
twice the proteids.

_How can one obtain formulas in which the fat is three times the
proteids?_

By using for dilution a 10-per-cent milk (i.e., milk containing 10 per
cent fat) which serves as the primary formula from which all the other
formulas of this series are derived.

In 10-per-cent milk the fat is just three times the proteids.

_How can one get the 10-per-cent milk?_