WHAT MAKES MAN GO 69 



Fourthly, intimately associated with the re- 

 moval of wastes is the important fact that the 

 several digestive fluids are not used or modified 

 during the digestive processes. After they have 

 caused the appropriate changes in proteins, car- 

 bohydrates or fats, they in turn are cast off from 

 the body as waste, although as useful as digestive 

 agents as ever, which seems to be the climax in 

 efficiency. 



This brief study of what makes the body go re- 

 veals again man's similarity to other living things, 

 and his dependence on them for his sources of 

 food energy. The vital processes responsible for 

 keeping the biological unit working for man's wel- 

 fare are very old and have never been improved 

 upon since civilized man emerged from the savage 

 state, nor may we ever expect these elementary 

 processes to be altered. Our attitude toward 

 them should be much like our recognition of the 

 law of gravitation — we having become adjusted 

 to it through education and experience. For the 

 ignorant and foolish, laws have been passed to 

 protect them from the harm that might come from 

 their disregard of nature's laws. We have been 

 too reluctant to recognize that man, himself, is 

 regulated by similar basic laws and practically no 

 preventative steps have been taken for his pro- 

 tection. This is imperative as the next move for- 

 ward in civilization. 



