138 The Philippine Journal of Science "23 



of 50.6 per cent from duplicate determinations on ten successive 

 days, is noteworthy. The determinations were made up to the 

 day the patient left the hospital. It is thought possible that, 

 as the Chinese are exceedingly fond of garlic, onions, and 

 cabbage these foods may be related in some way to this excep- 

 tionally high excretion of neutral sulphur. 



SUMMARY 



1. Analysis of the chemical constituents of Chinese urines 

 excreted by various classes of people taking different diets has 

 been made. 



2. The results have been compared with those obtained for 

 Europeans, subjects of India, Asiatics in Singapore, and 

 Europeans in Queensland. 



3. The absolute quantities of nitrogen and urea are low, being 

 similar to the results obtained by Campbell (4) for Asiatics in 

 Singapore. He attributed these low results to the indirect effects 

 of heat and humidity. Our results were obtained in a dry cold 

 season, and we consider diet to be the sole reason for such low 

 results. 



4. The percentage of ammonia nitrogen is far above the 

 European normal but agrees exactly with Campbell's (5) and 

 with McCay's(lO) findings. Disregarding climate, we believe 

 high cereal diets to be the cause, or it may be a racial charac- 

 teristic. 



5. The Chinese do not excrete large amounts of chlorides. 

 Bunge's theory that vegetarian diets produce a greater craving 

 for salt can be ignored in a country where goverment monopoly 

 makes salt a luxury. 



6. Values obtained for neutral sulphur were very high. 

 Young, (14) of Queensland, obtained similar results, from which 

 he declined to draw any definite conclusions. We again suggest 

 dietary causes, introducing an exogenous rather than an endo- 

 genous factor. 



7. Our results in general confirm those of others working on 

 Asiatic subjects. The environments being so different we 

 conclude that heat and humidity are not the controlling factors. 



8. Definite conclusions concerning the seeming abnormalities 

 of Asiatic metabolism are deferred until abundant data have 

 been collected from a variety of sources in the Orient. 



9. Clinicians working in the Orient should adjust their stand- 

 ards in chemical analysis accordingly. 



