Taxes upon consumable commodities may either he levied by an administration, of which the officers are appointed by govermnent, and are immediately accountable to government, of which the revenue must, in this case, vary from year to year, according to the occasional variations in the produce of the tax; or they may be let in farm for a rent certain, the farmer being allowed to appoint his own officers, who, though obliged to levy the tax in the manner directed by the law, are under his immediate inspection, and are immediately accountable to him.