MILK SURVEY OF THE CITY OF ROCHESTER 51 



The carniverous animal when fed on this diet is indifferent and relatively 

 harmless unless put on the defensive. The same is true of the carniverous 

 man. That is not a type of diet which succeeds from a standpoint of 

 success as we regard it in civilized communities. 



"Now, there is a second type of diet which succeeds with animals 

 and with men up to a certain point. I refer to a type of diet common 

 in parts of India, in Southern China and Japan, the Philippine Islands 

 and in tropical countries generally; that is, the diet derived from vege- 

 table products and meat. These people eat the cereal grains, beans and 

 other seeds, and to some extent peas. They eat tubers, more or less 

 fruit, and they eat meat, either fish or animal flesh, and they eat extraordi- 

 narily liberally of the leafy portion of plants. Now, animal experimenta- 

 tion in our laboratory first revealed the fact that this diet, cereals, tubers, 

 roots, together with muscle tissue of animals, the type that the carniver- 

 ous creature and human being selects as his meat ; this type of diet fails, 

 but when supplemented with leafy food it succeeds up to a certain point 

 with animals that can make a steady diet of cereals, tubers, roots and 

 muscle tissue. But we cannot get success if he leaves out leaves. 



"The leaf is so constituted with respect to quality of its proteins and 

 mineral content and this substance which differentiates cod liver oil from 

 vegetable fats, that the leaf supplements the tuber and edible root and 

 muscle tissue of animals. But those people, the people, for example, 

 from Southern China, the Chinese who run laundries in this country, I 

 think you will all agree with me that they are in general a small people ; 

 very spare and rather small. They are inclined to be somewhat anaemic, 

 yet fairly normal individuals as Chinamen would ordinarily go. It is a 

 common practice, however, throughout China, according to information 

 I have gained from a number of sources, for the Chinese men to want to 

 retire from active business at fifty years, and they do, when it is possible. 

 They quit work at fifty years and sit and smoke the rest of their days, 

 the son or sons supporting the father. Now, that type of people, the na- 

 tives of the tropics and of the Orient, while they exercise a certain 

 amount of ingenuity in certain lines, they claim to have first invented 

 gun powder, and have invented puzzles and games that have come down 

 to our time but they have not contributed, so far as I have been able 

 to learn, to any new invention, or attained any standard in mental activi- 

 ties as have other peoples. Of course, we must accept this judgment on 

 them with a certain amount of appreciation of the relation of other fac- 

 tors of progress that they bear; the type of religion that people adopt 

 will determine in a great measure certain habits of life and thought, and 

 that probably their food habits have something to do with their lack of 

 enterprise and aggressiveness, and their high infant mortality. These are 



