What general rule can be given for increasing the food?
To increase when the infant is not satisfied but is digesting well.
How does an infant show that he is not satisfied?
He drains the bottle eagerly and cries when it is taken away. He often forms the habit of sucking his fingers immediately after. He begins to fret half an hour or an hour before the next feeding is due.
In the series of formulas given in the table the quantities are mentioned for making only twenty ounces of food. How should it be prepared when more than this quantity is needed?
It is equally convenient to make up 25 ounces, 30 ounces, 35 ounces, or 40 ounces at a time.
To make—
25 ounces of any formula add one quarter more of each ingredient.
30 ounces of any formula add one half more of each ingredient.
35 ounces of any formula add three quarters more of each ingredient.
40 ounces of any formula add twice as much more of each ingredient.
Thus 25 ounces of Formula I would be obtained by using 2½ ounces of milk, 1¼ ounces of sugar and lime-water, 21¼ ounces of water; 30 ounces of the same would require 3 ounces milk, 1½ ounces lime-water and sugar, and 25½ ounces water; 35 ounces would require 3½ ounces milk, 1¾ ounces lime-water and sugar, and 29¾ ounces water. The amount of water need not be calculated in any case, but after measuring carefully the other ingredients enough water should be added to bring the total up to the amount required.
How great an increase in the quantity should be made at one time?