PEARL— NATIONAL FOOD CONSUMPTION. 183 



duced and consumed fall into one or another of the following cate- 

 gories, which are obviously based on the considerations set forth in 

 the preceding paragraph. 



I. Primary Foods. Including all plant materials used as human 



food or fractions of such materials, and all animals or 

 animal products in which the animal gets its nourish- 

 ment from some source other than the primary feeds and 

 fodders as defined below, either 



(a) Directly as harvested, with only such sophistication as 



comes from cooking, such as, for example, potatoes, 

 fish, oysters. 



(b) In derivative form, where by process of manufacture a 



food product is prepared from a raw plant product ; 

 such as, for example, wheat flour or cottonseed oil. 



II. Primary Feeds or Fodders. Including all plant materials or 



fractions of such materials used for the nourishment of 

 domestic animals, either 



(a) Directly as harvested, such as the coarse grains, or 



(b) In derivative or manufactured form, such as manufac- 



tured feeds. 



III. Secondary Foods. Including all edible products of animals 



used for human food nourished with primary feeds and 

 fodders, including both produced, 



(a) Directly, without involving the death of the producing 



animal, such as, for example, honey, eggs, or milk, and 



(b) Derivatively, involving the death of the animal, such as, 



for example, the meats. 

 The basic idea in this classification is, of course, to allocate the 

 nutrient resources of the nation according to the usage made of 

 them. We have certain products of the soil, and of the seas and 

 fresh water lakes and streams, which are directly produced and 

 directly consumed as human food. To produce a crop of potatoes 

 or of cod fish or oysters it is not necessary to feed out to the grow- 

 ing crop some other crop such as hay or grain. Therefore these are 

 direct, primary food products. On the other hand there are many 

 foods such as the meats, eggs, etc., where to obtain a pound of pro- 

 tein, or fat, or carbohydrate for human consumption it is necessary 



