[152] Let us now suppose the child come to man's estate in the condition of a wandering savage, dependent for his food upon what he can pick up or catch, after the fashion of the Australian aborigines. It is plain that the place of mother, as the supplier of vital capital, is now taken by the fruits, seeds, and roots of plants and by various kinds of animals. It is they alone which contain stocks of those substances which can be converted within the man's organism into work-stuff; and of the other matters, except air and water, required to supply the constant consumption of his capital and to keep his organic machinery going. In no way does the savage contribute to the production of these substances. Whatever labour he bestows upon such vegetable and animal bodies, on the contrary, is devoted to their destruction; and it is a mere matter of accident whether a little labour yields him a great deal--as in the case, for example, of a stranded whale; or whether much labour yields next to nothing--as in times of long-continued drought. The savage, like the child, borrows the capital he needs, and, at any rate, intentionally, does nothing towards repayment; it would plainly be an improper use of the word "produce" to say that his labour in hunting for the roots, or the fruits, or the eggs, or the grubs and snakes, which he finds and eats, "produces" or contributes to "produce" them. The same thing is true of more advanced tribes, who [153] are still merely hunters, such as the Esquimaux. They may expend more labour and skill; but it is spent in destruction.