Scientific studies comparing the nutrition of children and of animals on a mixed diet containing animal and vegetable foods, on a vegetable diet and on a diet containing increased amounts of vegetables continue to hold the interest of investigators.
In many cases dental caries and allied conditions are the center of interest. In others the main problem is to obtain the greatest amount of calcium storage. In still others the chief consideration is the general health, from the point of view of resistance to infection and the chronic degenerative type of disease as well as of the weight-height-age standards.
When one is planning a mixed diet and a vegetable diet, many factors require consideration, and it is because of this fact that the results of investigators have differed. The types of food, some types having a greater biologic value than others, their preparation, their combinations, the gastro-intestinal reaction, the reaction