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
----------------------------------------

_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