Happily, however, a treaty of amity and commerce and navigation was at last concluded between the two nations; but we need only here refer to those portions of it which more especially affected their navigation. By this treaty it was arranged that during the continuance of the French war, and for two years after its termination, the citizens of the United States might carry in vessels of their own, not exceeding the burthen of seventy tons, to the British West Indies, all such produce or manufactures of the United States as could be lawfully carried from the States to the islands by British vessels; and also that American vessels might carry back from the islands to the States all such West Indian produce as British vessels might carry to the same quarter; the same duties being levied by each government on the ships of the one country as on those of the other engaged in this trade. The United States were, however, expressly debarred from carrying molasses, sugar, coffee, cotton, etc., the produce of the West Indies, to any other part of the world. [Sidenote: The right to impose a countervailing tonnage duty reserved.] The liberty of continuing to trade to the ports of the territories of Great Britain in the East Indies was confirmed to American vessels; the government of the United States engaging that such vessels should carry the goods brought away by them from India to no part of the world except their own ports in America. By the 15th article it was agreed that no higher duties should be charged in the ports of either country upon vessels belonging to the other than were paid by the like vessels on merchandise of all other nations; nor should any prohibition be imposed upon the exportation or importation of any articles to and from the territories of the two contracting parties respectively, which should not equally extend to all other nations.[308] But the British government reserved to itself the right of imposing on American vessels entering into the British ports in Europe a tonnage duty equal to that which was payable by British vessels in the ports of America; and also such duty as might be adequate to countervail the difference of duty payable on the importation of European and Asiatic goods, when imported into the United States in British or in American vessels. Both parties further agreed to treat with regard to a more exact equalisation of duties. If a vessel should be taken or detained on suspicion of having enemy’s property on board, or of carrying contraband articles, it was stipulated that only the illegal portion of the cargo should be condemned and made prize.