In this manner, step by step, did the British political economists pass from the school of Adam Smith, in which it was taught that agriculture preceded manufactures and commerce, the latter of which were useful to the extent that they aided the former,--to that new one in which was, and is, taught, that manufactures and commerce were the great and profitable pursuits of man, and that agriculture, because of the "constantly increasing sterility of the soil," was the least profitable of all. Hence it is that we see England to have been steadily passing on in the same direction, and devoting all her energies to the prevention of the establishment, in any country of the world, of markets in which the raw produce of the land could be exchanged directly with the artisan for the products of his labour. For a time this prospered, but at length the eyes of the world were opened to the fact that they and their land were being impoverished as she was being enriched; and that the effect of the system was that of constituting herself _sole buyer_ of the raw products of their labour and their land, and _sole seller_ of the manufactured commodities to be given in exchange for them, with power to fix the prices of both; and thus that she was really acting in the capacity of mistress of the world, with power to impose taxes at discretion. By degrees, machinery and artisans were smuggled abroad, and new machinery was made, and other nations turned their attention more and more to manufacturing; and now it became necessary to make new exertions for the purpose of securing to England the monopoly she had so long enjoyed. To enable her to do this we find her at length throwing open her ports for the free admission of corn and numerous other of the raw products of the earth, free from the payment of any duty whatever, and thus offering to the various nations of the world a bounty on the further exhaustion of their land. The adoption of this measure would, it was supposed, induce Prussia, Austria, Russia, and Denmark, and all America, to devote themselves exclusively to the cultivation of the earth, abandoning all attempts at the creation of nearer places of exchange; and thus that all the world outside of England would become producers of raw materials to be carried to that single and distant market, there to be consumed or converted, and the refuse thereof to be deposited on the land of England. That such was the object of this measure was admitted by all. It was announced as a boon to the agriculturists of the world. How far it was calculated to be so, the reader may judge, after satisfying himself of the truth of the following propositions:-- I. That if there is to be but one place of exchange or manufacture for the world, all the rest of the people of the world must limit themselves to agriculture. II. That this necessarily implies the absence of towns, or local places of exchange, and a necessity for resorting to a place of exchange far distant.