216 SYMBIOGENESIS 



able to keep the waste products in the blood within normal 

 limits. 



The following figures were obtained in four days by 

 means of a diet consisting chiefly of carbohydrates. ("It 

 would seem," says Dr. Bywaters, "that the vitamine is 

 particularly concerned with the assimilation of the carbo- 

 hydrate element of the food.") 



Blood Nitrogen (in the case of Nephritics). 

 On the regular hospital diet. After the low nitrogen diet. 

 32 mg. 19 mg. 



40 19 



62 ,, 30 



44 ,, 19 



58 23 



37 ,, 20 



82 ,, 26 



30 ,, 20 



37 ,, 23 



48 22 



That a return to greater sobriety in matters of nitrogen 

 ingestion is indicated not only to achieve a return of conditions 

 of health, but also in order to maintain health at its highest 

 at all times and for the highest purposes, becomes clear from 

 a consideration of Sir Ernest Shackleton's diet during his 

 exploration of the Arctic regions : 



Breakfast consisting of 2oz. of lard per man, 2oz. of sugar, 

 loz. of dried milk, wheat protein and oats. 



Lunch consisting of foods composed of brazils, almonds 

 and beech nuts mixed with oil, and dried milk and oats. 



Dinner consisting of the same food in the same quantity 

 as at breakfast. 



We cannot but be struck by the predominance of "love- 

 foods" in this dietary. Moreover, each man was only allowed 

 35oz. of food a day, as compared with the 48oz. which the 

 average Londoner consumes. It speaks volumes for the 



