The Kalahari and its native races

The Kalahari is a vast sandy tract, roughly three hundred thousand square miles in area, elevated above the surrounding country, and having no permanent water. The Kalahari proper is the area of the Red Sand, but there are areas adjoining, often referred to as the Kalahari, which include the omaheke of Ovamboland, the area of white sand, and the tropical forests in the north. There is a fair rainfall, which allows the growth of abundant pasturage, so that large and small game abound, and this affords sustenance to the Bushmen; all other men who have risen above the purely hunting stage, and who have adopted even the rudiments of agriculture, or have begun to keep domestic animals, shun these regions of the Great Thirst.