The value of cod liver oil in this respect has only been recently recognized. Mellanby of England claims that the oil owes its curative and preventive properties to the presence of the “A” vitamine. But scientists in this country have not fully accepted this view. Eddy states, “It may be that the power of the oil is due to its ‘A’ vitamine content, in which it is known to be rich, or it may be due to a new vitamine, but the fact that the oil is a preventive in this respect gives the pediatrist another agent to insure normal growth.”

Sunshine as a Factor.—It has been found that the disease rickets is more prevalent in winter than in summer; this is believed to be due to the fact that sunshine during the summer months exerts a distinctly beneficial influence over the disease. Dr. Hess’s report of the good results which he has found to be derived from the use of the ultra violet rays as a substitute for sunshine in winter, would seem to confirm this view.

MALNUTRITION

Malnutrition is not confined to the children of the poor, though it is more common with infants of parents who have not the means to secure the best milk and give them the benefit of wholesome surroundings and plenty of sunshine. But babies of people in moderate circumstances, and even of wealthy parentage, are at times badly nourished, and require the same exacting care, the same attention to the food, the fresh air, and the sunshine that the poorer babies need in order to survive. Malnutrition may be the result of insufficient food, and it may also be due to the lack of one definite food element. Again, it may be brought on by some deformity of the mouth or stomach, which make it impossible for the baby to get all the food which he requires for his maintenance and growth. He may be born prematurely and his digestive apparatus not be sufficiently developed to care for the amount or type of food necessary for his needs, or he may have some congenital weakness which interferes with the absorption and assimilation of his food. All of these points must be considered.

Evidences of Correct Feeding.—If the baby shows a steady gain, both in weight and growth of stature, without digestional disturbances, the food given him is probably correct, but it must be kept in mind that nutritional disturbances, such as rickets and scurvy, are slow in developing, and do not manifest themselves with anything like the rapidity of digestional disturbances. Hence the nurse must take care as far as she is able, not only to prevent the food from causing indigestion, but also to see that it is not given in such a form as to induce those graver and more lasting nutritional disturbances which affect the entire system from infancy throughout the life of the individual.

SUMMARY

Breast Feeding versus Artificial Feeding.—There is no doubt about the fact that the breast-fed baby suffers less from digestional disturbances and has more resistance to disease than the baby fed even upon a perfectly prepared artificial food. The majority of diseases manifested by artificially fed infants have their origin in the following errors in diet.

Over-Feeding.—Resulting in acute gastro-intestinal disturbances (colic, enterocolitis, colitis, constipation).

Under-Feeding.—Resulting in chronic, and acute deficiency diseases (scurvy, rickets, malnutrition).

Evidences of Dietetic Errors.—The stools, showing characteristic evidences of excessive quantities of, protein, fat, or carbohydrates in the formula. Loss of weight or failure to gain. The development of deficiency diseases (scurvy, rickets, xerophthalmia, rickets and malnutrition).