INFANT FEEDING In taking up this part of our study on nutrition, there are several points to be kept in mind by the nurse: (1) that it will be difficult, if not impossible, to understand the metabolic changes taking place in abnormal conditions unless those occurring in the normal human body are understood; (2) that certain diseases are due directly to errors in diet; (3) that in other diseases, diet plays the chief part both in the bringing about and in the relieving of the conditions; (4) whereas there are certain other diseases not affected by diet, save in so far as well or poorly selected and prepared food always affects the individual, whether normal or abnormal, and that in the latter conditions the organism is more susceptible to bad influences. This being the case it behooves the nurse to examine herself to find whether or not she understands the fundamental principles underlying the nutrition of the human body, that she may efficiently deal with the changes which occur more or less when the body is attacked by disease. We include normal infant feeding in this section, because in no other age is it quite so necessary for care to be observed in formulating and carrying out a diet. Errors during this period may only appear to exert a local influence, causing disturbance which may readily be relieved, but the danger is in laying too little stress upon these disturbances, forgetting that the delicate organism of a child may be permanently injured by a constant disregard of nature's mandates. In the words of the old adage, the pitcher may go once too often to the well, and an injured digestive apparatus is even more difficult to mend than the proverbial pitcher. In this section, then, the metabolic changes due to pathological conditions and the dietetic treatment thereof will be discussed.