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 not, however, seem essential to the nature of the trade that it should be so. A Dutch merchant may, for example, employ his capital in transacting the commerce of Poland and Portugal, by carrying part of the surplus produce of the one to the other, not in Dutch, but in British bottoms. It may be presumed that he actually does so upon some particular occasions. It is upon this account however that the carrying trade has been supposed peculiarly advantageous to such a country as Great Britain, of which the defence and security depend upon the number of its sailors and shipping. But the same capital may employ as many sailors and shipping either in the foreign trade of consumption, or even in the home trade, when carried on by coasting vessels, as it could in the carrying trade. The number of sailors and shipping which any particular capital can employ, does not depend upon the nature of the trade, but partly upon the bulk of the goods in proportion to their value, and partly upon the distance of the ports between which they are to be carried; chiefly upon the former of those two circumstances. The coal trade from Newcastle to London, for example, employs more shipping than all the carrying trade of England, though the ports are at no great distance. To force, therefore, by extraordinary encouragements, a larger share of the capital of any country into the carrying trade, than what would naturally go to it, will not always necessarily increase the shipping of that country.

The capital, therefore, employed in the home trade of any country will generally give encouragement and support to a greater quantity of productive labor in that country, and increase the value of its annual produce more than an equal capital employed in the foreign trade of