To understand the history and the economic conditions of South Africa, one must first know something of its physical structure. The subject may seem dry, and those readers who do not care for it may skip this chapter. But it need not be uninteresting, and it is certainly not uninstructive. For myself, I can say that not only South African history, but also the prospects of South African industry and trade, were dark matters to me till I had got, by travelling through the country, an idea of those natural features of the southern part of the continent which have so largely governed the course of events and have stamped themselves so deeply upon the habits of the people.