~Wet Nurse.~--The advisability of procuring a wet nurse when the mother is unable to nurse the infant, (a) on account of the more digestible character of the food constituents, especially the proteins, in mother's milk over those of cow's milk; (b) on account of the resistance furnished by the natural food which has been proved to be very much greater than that furnished by any other food, no matter how carefully the modification of the milk is made.
~Premature Infants.~--Their caloric needs are greater than in full-term babies, hence their food must be adjusted to meet these needs.
In fact the nurse must have an understanding of the behavior of foods in the metabolism of infancy and the laws which govern their use in the organism of the child.
(a) Write a formula for a two months' old infant weighing twelve pounds, which contains 3% fat, 2% protein, and 6% sugar.
(b) Change this formula so that it will contain 3% fat, 1.5% protein, and 6% sugar.
(c) Write a formula for an eight months' old baby, using whole milk instead of cream and skimmed milk.
(d) Write a formula for a premature baby containing 1% fat, 4% sugar, and 0.25% protein (allowing 30 calories per pound of body weight).
[64] "Childhood and Growth," p. 18, by Lafayette Mendel.
[65] "Diseases of Nutrition and Infant Feeding," by Morse and Talbot.
[66] "Feeding the Family," by Mary Swartz Rose.
[67] "Diseases of Nutrition and Infant Feeding," p. 218, by Morse and Talbot.
[68] "Generally Accepted Methods for Artificial Feeding of Infants with Indicatives and Contra-Indicatives," by Orville R. Chadwell, M.D. Reprinted from "New England Medical Gazette," June, 1916.
[69] "Mechanical Factors of Digestion," by Cannon.
[70] "Diseases of Nutrition and Infant Feeding," p. 204, by Morse and Talbot.
[71] "New England Medical Gazette," June, 1916. Reprint by Orville Chadwell.
[72] The best substitute for the homogenizer is found in an electric mixer; a formula prepared with a fat other than cream can be made by means of this mixer to approximate very closely that of homogenized milk.
[73] There are a number of pasteurizers on the market; one sold by the Walker Gordon Laboratory and one designed by Dr. R. G. Freeman of New York are both satisfactory.