The defect of power in the existing Confederacy to regulate the commerce between its several members, is in the number of those which have been clearly pointed out by experience. To the proofs and remarks which former papers have brought into view on this subject, it may be added that without this supplemental provision, the great and essential power of regulating foreign commerce would have been incomplete and ineffectual. A very material object of this power was the relief of the States which import and export through other States, from the improper contributions levied on them by the latter. Were these at liberty to regulate the trade between State and State, it must be foreseen that ways would be found out to load the articles of import and export, during the passage through their jurisdiction, with duties which would fall on the makers of the latter and the consumers of the former. We may be assured by past experience, that such a practice would be introduced by future contrivances; and both by that and a common knowledge of human affairs, that it would nourish unceasing animosities, and not improbably terminate in serious interruptions of the public tranquillity. To those who do not view the question through the medium of passion or of interest, the desire of the commercial States to collect, in any form, an indirect revenue from their uncommercial neighbors, must appear not less impolitic than it is unfair; since it would stimulate the injured party, by resentment as well as interest, to resort to less convenient channels for their foreign trade. But the mild voice of reason, pleading the cause of an enlarged and permanent interest, is but too often drowned, before public bodies as well as individuals, by the clamors of an impatient avidity for immediate and immoderate gain. The necessity of a superintending authority over the reciprocal trade of confederated States, has been illustrated by other examples as well as our own. In Switzerland, where the Union is so very slight, each canton is obliged to allow to merchandises a passage through its jurisdiction into other cantons, without an augmentation of the tolls. In Germany it is a law of the empire, that the princes and states shall not lay tolls or customs on bridges, rivers, or passages, without the consent of the emperor and the diet; though it appears from a quotation in an antecedent paper, that the practice in this, as in many other instances in that confederacy, has not followed the law, and has produced there the mischiefs which have been foreseen here. Among the restraints imposed by the Union of the Netherlands on its members, one is, that they shall not establish imposts disadvantageous to their neighbors, without the general permission.