CHAPTER II.
ARTS OF SUBSISTENCE.
Supremacy of Mankind over the Earth.—Control over Subsistence the Condition.—Mankind alone gained that Control.—Successive Arts of Subsistence—I. Natural Subsistence; II. Fish Subsistence; III. Farinaceous Subsistence; IV. Meat and Milk Subsistence; V. Unlimited Subsistence through Field Agriculture.—Long Intervals of Time between them. 19