By confining the duties of customs to a few sorts of goods, and by levying those duties according to the excise laws, a much greater saving might probably be made in the annual expense of the customs. Secondly, such taxes necessarily occasion some obstruction or discouragement to certain branches of industry. As they always raise the price of the commodity taxed, they so far discourage its consumption, and consequently its production. If it is a commodity of home growth or manufacture, less labour comes to be employed in raising and producing it. If it is a foreign commodity of which the tax increases in this manner the price, the commodities of the same kind which are made at home may thereby, indeed, gain some advantage in the home market, and a greater quantity of domestic industry may thereby be turned toward preparing them.