136 



FOOD. 



" For the following combination the several articles of the ra- 

 tion most closely approaching in character to the food-materials 

 used by natives of the tropics proportioned in quantity accord- 

 ing to the standard proposed for hot climates have been se- 

 lected. 



Tropical Dietary. IV. 



Total carbon, 327.50 gm. Nitrogen to carbon, 1 : 19.6. 



" On averaging these four dietaries, as furnished by the ration 

 proposed for the tropics, the mean nutrient composition is seen to 

 be as follows : 



Total carbon, 350 gm. Nitrogen to carbon, 1 : 20. 



" It will be observed that while the above dietaries differ con- 

 siderably among themselves, yet when averaged together in equal 

 proportions they do not greatly vary from the nutritive standard 

 for the tropics already proposed and this is an additional reason 

 why a selection of the same articles of the ration should not be 

 made from day to day. It is seen that the above average dietary, 

 as compared with the nutrient standard, is still slightly deficient in 

 fats and fuel-value and a trifle in excess as regards protein. These 

 defects, if they may be considered as such, are, however, readily 

 corrected by a rotation of dietaries, in which dietary II. is used 

 twice where dietaries I., III., and IV. are each employed but 

 once. The results of this change are as follows : 



