If one uses bottled milk, in cities, the upper third may be used, but if milk and cream are bought separately it is usually more convenient to mix these, as cream will not rise uniformly upon the milk a second time.
What per cent milk must be used to obtain twice as much fat as proteids? Use for dilution a seven per cent milk, that is, milk containing seven per cent fat, as in this milk the fat is just twice the proteids.
How is this obtained? Same as top-milk, described on another page; or by mixing three parts of plain milk and one part of ordinary cream (sixteen per cent), or by obtaining it directly from the milk laboratories.
How should we prepare the food for the early months? Granted you make up twenty ounces at a time, first obtain the ten per cent, or seven per cent, milk to be used, then take the number of ounces of this called for in the formula desired. One must remember that to make twenty ounces of food one ounce of milk sugar (or three even tablespoonfuls) and one ounce of lime-water must be used. The rest of the food is boiled water and the per cent milk.
FIRST SERIES—Five formulas for early months for ten per cent milk:
Formulas. 1 2 3 4 5
10 per cent milk 2 oz. 3 oz. 4 oz. 5 oz. 6 oz.
*Milk Sugar 1 oz. 1 oz. 1 oz. 1 oz. 1 oz.
Lime-water 1 oz. 1 oz. 1 oz. 1 oz. 1 oz.
Boiled water 17 oz. 16 oz. 15 oz. 14 oz. 13 oz.
——- ——- ——- ——- ——-
20 oz. 20 oz. 20 oz. 20 oz. 20 oz.
*The milk sugar takes no space as it is always dissolved in the boiled water.
How can we strengthen this food? By gradually increasing the milk (top milk) and decreasing the amount of water.
SECOND SERIES—Of five formulas for the early months from the seven per cent milk. This is weaker in fat (cream), etc., about one-third:
Formulas. 1 2 3 4 5 7 per cent, milk 2 oz. 3 oz. 4 oz. 5 oz. 6 oz. Milk Sugar 1 oz. 1 oz. 1 oz. 1 oz. 1 oz. Lime-water 1 oz. 1 oz. 1 oz. 1 oz. 1 oz. Boiled water 17 oz. 16 oz. 15 oz. 14 oz. 13 oz. ——- ——- ——- ——- ——- Food 20 oz. 20 oz. 20 oz. 20 oz. 20 oz.
How can I decide which series of formulas to use? A strong child with good digestion can be given from the first series, ten per cent milk.