markets. Those goods are generally purchased either immediately with the produce of British industry, or with something else which had been purchased with that produce, and the final returns of those trades are generally used or consumed in Great Britain. The trade which is carried on in British bottoms between the different ports of the Mediterranean, and some trade of the same kind carried on by British merchants between the different ports of India, make, perhaps, the principal branches of what is properly the carrying trade of Great Britain.
The extent of the home-trade and of the capital which can be employed in it, is necessarily limited by the value of the surplus produce of all those distant places within the country which have occasion to exchange their respective productions with one another. That of the foreign trade of consumption, by the value of the surplus produce of the whole country and of what can be purchased with it. That of the carrying trade, by the value of the surplus produce of all the different countries in the world. Its possible extent, therefore, is in a manner infinite in comparison of that of the other two, and is capable of absorbing the greatest capitals.