=Stage of Direct Appropriation.=--This stage covers the whole course of prehistoric man from the time the first ape stood erect some 500,000 years ago[2] through the stone, bronze, and iron ages to the age of literature and art. During these long years civilization traveled far, for the least cultured savages observed have advanced not only away beyond the highest of the lower animals but also beyond the lowest intellectual estate of which human beings may be supposed capable of subsisting. And from the lowest to the highest of these tribes are shown traits varying as greatly in degree as from one stage in the above classification to another. The Indians at the time of the discovery of America and the three centuries following, and many of the tribes of Africa during the explorations of Livingstone and Stanley, were and still are in this stage and hence have been subjected to scientific study and investigation. Their governments while variable are of the primitive types. Ordinarily a chief autocratically rules because of hereditary influence. Little is manufactured, planting is scarcely known; by hunting, fishing, and collecting nature’s products of wild seeds and roots is a subsistence obtained often with long, arduous, and dangerous labor. Efficiency, as we understand that term to-day, is very low, and the number of persons that a given area can support is few. No one can predict but what to-morrow he may have to go hungry or suffer cold from the inclemency of the weather, for his store of food is _nil_ or small, his shelter rudimentary and clothing scanty. Note the hardships of the party of Henry M. Stanley during his expedition across the African wilderness in quest of Emin Pasha.[3] Notwithstanding Stanley’s men were possessed of firearms and edged tools and carried some provisions with them, and were traversing a country teeming with vegetable and animal life, many times they were on the verge of starvation. The number of the natives in these wildernesses are no doubt kept low because of the extreme difficulties of procuring the necessities of life.