DIET, NUTRITION AND EXCRETION 65 



2. The total nitrogen varies from 6.64 grammes in the Brah- 

 min to 9.25 in the Chinese. 



3. The urea varies from 11.08 grammes in the Brahmin to 

 16.00 in the Chinese. 



4. The ammonia varies from .57 gramme in the Brahmin to 

 .66 in the Malay. 



5. The ammonia coefficient varies from 5.4% in the Chinese 

 to 7.1 in the Brahmin. 



6. The chlorides vary from 5.2 grammes in the Tamil to 8 

 in the Malay. 



7. The Singapore student partakes of a smaller amount of 

 food than the Philippine or Bengali student. This seems to be due 

 directly or indirectly to the climatic conditions of Singapore. 



References. 



1. "A System of Diet and Dietetics." Edited by G. A. 

 Sutherland, 1908. " Food Inspection and Analysis " by Albert E. 

 Leach, 1911. " Text Book of Physiology " edited by E. A. Schafer, 

 1898. 



2. Cramer, W. " Directions for a Practical Course in Chemi- 

 cal Physiology/' 1915. 



3. Howell. " Text Book of Physiology," p. 922. 1915. 



4. McCay. The Philippine Journal of Science. B. Medical 

 Vol. V. p. 163. 1910. 



5. Aron. The Philippine Journal of Science. B. Medical. 

 Vol. IV. 1909. 



6. Sutherland, G. A. "A System of Diet and Dietetics," 

 p. 854. 1908. 



7. Ibid. p. 158, 1908. 



8. Halliburton. "Handbook of Physiology," p. 579. 1909. 



R. A. Soc, No. 76, 1917. 



