The error here results from the general error of Mr. Ricardo's system, which places the poor cultivator among the rich soils of the swamps and river-bottoms, and sends his rich successors to the poor soils of the hills,--being directly the reverse of what has happened in every country of the world, in every county in England, and on every farm in each and all of those counties.[138] Had he not been misled by the idea of "the constantly increasing sterility of the soil," Mr. McCulloch could not have failed to see that the only advantage resulting from the use of the steam-engine, or the loom, or any other machine in use for the conversion of the products of the earth, was, that it diminished the quantity of labour required to be so applied, and increased the quantity that might be given to the work of production. It is quite true that wheelbarrows and carts, wagons and ships, may be increased indefinitely; but of what use can they possibly be, unless the things to be carried be first produced, and whence can those things be obtained except from the earth? The grist-mill is useful, provided there is grain to be ground, but not otherwise. The cotton-mill would be useless unless the cotton was first produced. Agriculture _must_ precede manufactures, and last of all, says Dr. Smith, comes foreign commerce.[139] The reader has had before him a passage from Mr. J.S. Mill, in which that gentleman says that "if the law [of the occupation of the land] were different, almost all the phenomena of the production and distribution of wealth would be different from what they now are." In the days of Adam Smith it had not yet been suggested that men began by the cultivation of rich soils, and then passed to poor ones, with constantly diminishing power to obtain food. Population, therefore, had not come to be regarded as "a nuisance" to be abated by any measures, however revolting, and imposing upon Christian men the necessity of hardening their hearts, and permitting their fellow-men to suffer every extremity of poverty and distress "short of absolute death," with a view to bring about a necessity for refraining to gratify that natural inclination which leads men and women to associate in the manner tending to promote the growth of numbers and the development of the best feelings of the human heart. It was then considered right that men and women should marry, and increase of population was regarded as evidence of increased wealth and strength. Dr. Smith, therefore, looked at the affairs of the world as they were, and he saw that the production of commodities not only preceded their conversion and exchange, but that in the work of production the earth aided man by increasing the _quantity_ of things to, be consumed; whereas labour applied in other ways could change them only in their _form_ or in their _place_, making no addition to their quantity. He, therefore, saw clearly that the nearer the spinner and the weaver came