NATIONAL FOOD CONSUMPTION. 



197 



ary. In the total nutritional calory intake 6i per cent, comes from 

 primary foods and 39 per cent, from secondary. 



It is interesting to compare the percentage of American nutri- 

 tional intake derived from primary and secondary sources with cor- 



I 



0:! 



BO . 



m 



t 



PROTt/N 



r-AT 



CALORltS 



U/i/TtD 3TA7£-S 



lUniT^D H//iGDOM 



Fig. 3. Diagram showing the relative proportions of the American and British 

 food intake derived from animal sources (exclusive of fish). 



