The following table gives, in the order of their laxative effects, a few of the principal grains:
1 Flaked or whole rye
2 Flaked or whole wheat
3 Flaked or whole barley
4 Flaked or whole oats
NUTS
Nuts as heat producers
The true nut is the seed of trees and shrubs which stores the greater proportion of food material for nourishing the seedling in the form of vegetable oil. The nut is very largely a fuel food or heat producer, therefore among the primitive races, along the warmer belts of the earth's surface, the nut was not of so much importance, but in the northern or colder countries, where the body-heat meets with such powerful resistance from climatic environment, the nut is of equal, if not of more importance than fruits.
There are a few miscellaneous articles of food that are classed as nuts, which do not belong primarily to this group.
In the following discussion I will take up the several varieties of nuts in the order of their general value as articles of human nutrition:
Pine nuts
Composition of the pine nut
The nitrogen factor in nuts