ARTICLE III
The land of the Seneka nation is bounded as follows: Beginning on Lake Ontario, at the north-west corner of the land they sold to Oliver Phelps, the line run westerly along the lake, as far as O-yōng-wong-yeh Creek at Johnson's Landing-place, about four miles eastward from the fort of Niagara; then southerly up that creek to its main fork, then straight to the main fork of Stedman's Creek, which empties into the river Niagara, above Fort Schlosser, and then onward, from that fork, continuing the same straight course, to that river; (this line, from the mouth of O-yōng-wong-yeh Creek to the river Niagara, above Fort Schlosser, being the eastern boundary of a strip of land, extending from the same line to Niagara River, which the Seneka nation ceded to the King of Great Britain, at a treaty held about thirty years ago, with Sir William Johnson;) then the line runs along the river Niagara to Lake Erie; then along Lake Erie to the north-east corner of a triangular piece of land which the United States conveyed to the state of Pennsylvania, as by the President's patent, dated the third day of March, 1792; then due south to the northern boundary of that state; then due east to the south-west corner of the land sold by the Seneka nation to Oliver Phelps; and then north and northerly, along Phelps' line, to the place beginning on Lake Ontario. Now, the United States acknowledge all the land within the aforementioned boundaries, to be the property of the Seneka nation; and the United States will never claim the same, nor disturb that Seneka nation, nor any of the Six Nations, or their Indian friends residing thereon and united with them, in the free use and enjoyment thereof: but it shall remain theirs, until they choose to sell the same to the people of the United States, who have the right to purchase.