If he carried them to the public warehouse, no duty to be paid till they were taken out for home consumption. If taken out for exportation, to be duty-free; proper security being always given that they should be so exported. The dealers in those particular commodities, either by wholesale or retail, to be at all times subject to the visit and examination of the custom-house officer; and to be obliged to justify, by proper certificates, the payment of the duty upon the whole quantity contained in their shops or warehouses. What are called the excise duties upon rum imported, are at present levied in this manner; and the same system of administration might, perhaps, be extended to all duties upon goods imported; provided always that those duties were, like the duties of excise, confined to a few sorts of goods of the most general use and consumption. If they were extended to almost all sorts of goods, as at present, public warehouses of sufficient extent could not easily be provided; and goods of a very delicate nature, or of which the preservation required much care and attention, could not safely be trusted by the merchant in any warehouse but his own.
If, by such a system of administration, smuggling to any considerable extent could be prevented, even under pretty high duties; and if every duty was occasionally either heightened or lowered according as it was most likely, either the one way or the other, to afford the greatest revenue to the state; taxation being always employed as an instrument of revenue, and never of monopoly; it seems not improbable that a revenue, at least equal to the present neat revenue of the customs, might be drawn from duties upon the importation of only a few sorts of goods of the most general use and consumption; and that the duties of customs might thus be brought to the same degree of simplicity, certainty, and precision, as those of excise. What the revenue at present loses by drawbacks upon the re-exportation of foreign goods, which are afterwards re-landed and consumed at home, would, under this system, be saved altogether. If to this saving, which would alone be very considerable, were added the abolition of all bounties upon the exportation of home produce; in all