Through the greater part of Europe, too, the expense of land-carriage increases very much both the and real and nominal price of most manufactures. It costs more labour, and therefore more money, to bring first the materials, and afterwards the complete manufacture to market. In China and Indostan, the extent and variety of inland navigations save the greater part of this labour, and consequently of this money, and thereby reduce still lower both the real and the nominal price of the greater part of their manufactures. Upon all these accounts, the precious metals are a commodity which it always has been, and still continues to be, extremely advantageous to carry from Europe to India. There is scarce any commodity which brings a better price there; or which, in proportion to the quantity of labour and commodities which it costs in Europe, will purchase or command a greater quantity of labour and commodities in India. It is more advantageous, too, to carry silver thither than gold; because in China, and the greater part of the other markets of India, the proportion between fine silver and fine gold is but as ten, or at most as twelve to one; whereas in Europe it is as fourteen or fifteen to one. In China, and the greater part of the other markets of India, ten, or at most twelve ounces of silver, will purchase an ounce of gold; in Europe, it requires from fourteen to fifteen ounces. In the cargoes, therefore, of the greater part of European ships which sail to India, silver has generally been one of the most valuable articles. It is the most valuable article in the Acapulco ships which sail to Manilla. The silver of the new continent seems, in this manner, to be one of the principal commodities by which the commerce between the two extremities of the old one is carried on; and it is by means of it, in a great measure, that those distant parts of the world are connected with one another. In order to supply so very widely extended a market, the quantity of silver annually brought from the mines must not only be sufficient to support that continued increase, both of coin and of plate, which is required in all thriving countries; but to repair that continual waste and consumption of silver which takes place in all countries where that metal is used.