[7] For an elaboration of the conception of mediate goods the reader is referred to Von Boehm-Bawerk's work on "Positive Theory of Capital" and to John Rae's work on "The Sociological Theory of Capital." _All Labor immediately Productive of Wealth._--When a savage abandons the plan of fishing from the shore and gives his labor for a fortnight to making a canoe with which to fish more effectively, he interposes an interval of time between his labor and its ultimate fruits, the consumers' goods. There is no such interval between the labor and the kind of wealth that it first creates, namely, the canoe. This immediate product of labor is itself a form of wealth and at once rewards the laborer, since it is what he needs, though he does not need it for consumption. Industry always pays as it goes and tolerates no hiatus between labor and wealth in some form. _Organized Industry immediately Productive of Consumers' Goods._--If one man were keeping the stock of canoes of a few fishermen in repair and taking as his pay a share of each day's catch, he would not have to wait for his food any longer than the fishermen themselves. This mode of conducting the industry, however, involves organization. If each fisherman had to make his first canoe, it would be necessary for him to wait for fish; but as soon as a stock of canoes has been obtained and a special set of men assigned to the work of keeping this stock intact in number and quality, that necessity entirely ceases. Five men may do nothing but fish while a sixth keeps their stock of canoes intact by repairing old ones left on the shore and making new ones to replace such as are beyond repairing. Fishing and boat building may go on simultaneously, and all the men may go share and share in each day's catch.[8] This is a type of what goes on in modern industry, where a complex stock of capital goods always exists and is kept intact by the action of a class of persons who share the returns that come from using the stock. None of these persons has to wait for food, although some of them devote themselves exclusively to the production of tools. This fact shows that the necessity for waiting, as well as working, wherever instruments are in the process of manufacture, is not among the universal phenomena of economics, and that it is not present in that organized industry which we chiefly study. Such a permanent stock of capital goods as the fishing community of our illustration possesses would enable it to get its food, the fish, day by day, by working in different ways and using the permanent stock. If we call this permanent supply of canoes, etc., _capital_, it is, _in a causal way_, mediate wealth, though it is not so in point of time. Some labor is spent each day on it, and itself creates each day some consumers' wealth. These two operations go on simultaneously, and the men who work to maintain the stock and those who use it get their returns together. In very primitive life the work