20 20 20 20 20
oz. oz. oz. oz. oz. oz. oz. oz.
---------------------------------------------------------

When larger quantities than 20 ounces are required they are calculated
in the same manner as described on page 73 in speaking of 10-per-cent
milk.

The approximate composition of the formulas of the Fourth Series
expressed in percentages is as follows:

----------------------------------------
FORMULA. Fat. Sugar. Proteids.
----------------------------------------
I. 1.00 6.00 0.90
II. 1.20 6.00 1.00
III. 1.40 6.50 1.20
IV. 1.60 6.50 1.40
V. 1.80 6.00 1.60
VI. 2.00 6.00 1.80
VII. 2.40 5.50 2.10
VIII. 2.80 5.50 2.50
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_Why is it that an infant so often vomits some of its food within a
few moments after finishing its bottle?_

Usually because the quantity is too large. Sometimes it is due to the
fact that the food is taken too rapidly, from too large a hole in the
nipple. It may be due to too tight clothing, or to moving the child
about in such a way as to press upon the stomach.

_What are the principal causes of, and the changes in the food
required by habitual vomiting, regurgitation, or spitting up of small
quantities of food between feedings, often repeated many times a day?_

This is always a symptom of gastric indigestion, and a most
troublesome one. In such conditions the fat and often the sugar also
should be reduced and the lime-water increased.

Formulas made from rich top-milk or milk and cream are to be avoided.
Those made from 7-per-cent milk are less likely to be the cause of
trouble than those from 10-per-cent milk; but if the symptoms are at
all severe it is better to use instead of these the formulas of the
Fourth Series derived from plain milk.

Reduction in the sugar may be made by adding only one half ounce of
milk sugar to each twenty ounces of the food; in severe cases the
sugar may be omitted altogether.

It is often advisable to double the amount of lime-water--i.e., use
two ounces to each twenty ounces of food.

The malted foods and all other foods containing much sugar usually
aggravate the symptoms.

The intervals between meals should generally be half an hour longer,
and sometimes an hour longer, than when digestion is