ARTICLE III
In order to promote the interests and encourage the industry of all the inhabitants of the countries watered by the river St. John and its tributaries, whether living within the State of Maine or the province of New Brunswick, it is agreed that, where, by the provisions of the present treaty, the river St. John is declared to be the line of boundary, the navigation of the said river shall be free and open to both parties, and shall in no way be obstructed by either; that all the produce of the forest, in logs, lumber, timber, boards, staves or shingles, or of agriculture, not being manufactured, grown on any of those parts of the State of Maine watered by the river of St. John, or by its tributaries, of which fact reasonable evidence shall, if required, be produced, shall have free access into and through the said river and its said tributaries, having their source within the State of Maine, to and from the sea-port at the mouth of the said river St. John's, and to and round the falls of the said river, either by boats, rafts, or other conveyance; that when within the province of New Brunswick, the said produce shall be dealt with as if it were the produce of the said province; that, in like manner, the inhabitants of the territory of the upper St. John, determined by this treaty to belong to Her Britannic Majesty, shall have free access to and through the river, for their produce, in those parts where the said river runs wholly through the State of Maine; Provided, always, that this agreement shall give no right to either party to interfere with any regulations not inconsistent with the terms of this treaty which governments, respectively, of Maine or of New Brunswick may make respecting the navigation of the said river, where both banks thereof shall belong to the same party.