The mark of the old utility of the animal in varied employment is retained in our use of the term horse-power in measuring the energy of engines. That gauge of strength of old determined what man could do in the severest taxes upon the forces at his command. In attaining the point where, owing to the possession of horses, he could use this standard, he won a great way beyond the station of his ancestors, who had but the strength of men at their command. Modern invention, by giving us heat-engines, has made the way for an advance. In another century, or even in another generation, the horse may, save for the uses of war, be confined to the position of a luxury and an ornament.
THE FLOCKS AND HERDS: BEASTS FOR
BURDEN, FOOD, AND RAIMENT
Effect of this Group of Animals on Man.—First Subjugations.—Basis of Domesticability.—Horned Cattle.—Wool-bearing Animals.—Sheep and Goats.—Camels: their Limitation.—Elephants: Ancient History; Distribution; Intelligence; Use in the Arts; Need of True Domestication.—Pigs: their Peculiar Economic Value; Modern Varieties; Mental Qualities.—Relation of the Development of Domesticable Animals to the Time of Man's Appearance on the Earth.
It is not too much to say that the opportunity to go forward on the paths of culture, at least the chance to advance any considerable distance beyond the estate of primitive men, depends in a considerable measure upon what the wilderness may offer in the way of domesticable beasts of burden. Where such exist we find that the folk who dwell with them in any land are almost certain to have made great advances. Where the surrounding nature, however rich, denies this boon, we find that men, however great their natural abilities may appear to be, exhibit a retarded development. Thus in North America, where there was no domesticable beast of burden, the Indians, though an able folk, remain savages. So, too, in central and southern Africa, where the mammalian life, though rich, affords no large forms which tolerate captivity, the people have failed to attain any considerable culture. On the other hand, in the great continent of the Old World, where the horse, the ass, the buffalo, the camel, and the elephant existed in the primitive wilds, men rose swiftly toward the civilized station.
Domesticated Buffaloes in Egypt