196 



PEARL— STAPLE COMMODITIES AND 



than upon vegetable oils, nuts and the like. This condition is natu- 

 rally reversed as regards carbohydrate. Ninety-four per cent, of 

 this nutrient comes from primary sources and only 5 from second- 



80 



^ 



PFVTtIN 



r-AT 



CARBOHYDRATE- CALORICS 



l/^/?OM PPlMAPy SOUffCfSi 



rf?OM SeCOr/DARY SCOURCtS 



Fig. 2. Diagram showing the percentages of the total nutritional intake of 

 the American people derived from primary and secondary sources. 



