| No. 1. Ryan's Island. | United States. |
| No. 2. King's Island. | United States. |
| No. 3. Les Trois Isles. | United States. |
| No. 4. La Septieme Isle. | United States. |
| No. 5. Quissibis. | Great Britain. |
| No. 6. La Grand Isle. | United States. |
| No. 7. Thibideau's Islands. | United States. |
| No. 8. Madawaska Islands. | Great Britain. |
| No. 9. Joseph Michaud's three islands. | United States. |
| No. 10. Pine Island. | Great Britain. |
| No. 11. Baker's, Turtle, Dagle's, Fourth, Fifth islands. | Great Britain. |
| No. 12. Kennedy's Island | Great Britain. |
| No. 13. Crock's, Cranberry, Gooseberry islands. | Great Britain. |
| No. 14. Savage's Island. | United States. |
| No. 15. Wheelock's Island. | United States. |
| No. 16. Caton's Island. | United States. |
| No. 17. Honeywell's Island. | United States. |
| No. 18. Savage and Johnson's Island. | United States. |
| No. 19. Grew's Island. | United States. |
| No. 20. Kendall's Island. | Great Britain. |
The islands were distributed to Great Britain or to the United States, as they were found to be on the right or left of the deep channel. There was but one doubtful case, La Septieme Isle, and that was apportioned to the United States because the majority of the owners were ascertained to reside on the United States side of the river.
Monuments were erected upon the islands, marking them for Great Britain or the United States, as the case may have been.
After leaving the St. John the boundary enters the St. Francis, dividing the islands at the mouth of that river in the manner shown in the maps. It then runs up the St. Francis, through the middle of the lakes upon it, to the outlet of Lake Pohenagamook, the third large lake from the mouth of the river. At the outlet a large monument has been erected.
In order to determine the point on the Northwest Branch to which the treaty directed that a straight line should be run from the outlet of Lake Pohenagamook, a survey of that stream was made, and also of the main St. John in the neighborhood of the mouth of the Northwest Branch, and a line was cut between the St. John and the point on the Northwest Branch ascertained by the survey to be 10 miles in the nearest direction from it, and the distance was afterwards verified by chaining.
It was ascertained also, in accordance with the provisions of the treaty, by a triangulation of the country toward the highlands dividing the waters of the St. Lawrence and of the St. John, that more than 7 miles intervened between the point selected on the Northwest Branch and the crest of the dividing ridge. A large iron monument was afterwards erected on the point thus selected, and the space around was cleared and sown with grass seed. It is a short distance below the outlet of Lake Ishaganalshegeck.
The outlet of Lake Pohenagamook and the point on the Northwest Branch designated by the treaty having been thus ascertained and marked, in the spring of 1844 a straight line was run between them. Along that line, which passes entirely through forest, monuments were erected at every mile, at the crossings of the principal streams and rivers, and at the tops of those hills where a transit instrument had been set up to test the straightness of the line.
As soon as the parallel of latitude 46° 25' had been determined on the Southwest Branch, in the early part of the summer of 1844, a straight line was drawn from the boundary point on the Northwest Branch to a large monument erected on the left bank of the Southwest Branch where it is intersected by the parallel of latitude 46° 25'. The line so drawn crosses the Southwest Branch once before it reaches the parallel of latitude 46° 25', and at about half a mile distance from that parallel. There also a large monument has been set up on the left bank.
From the intersection of the parallel 46° 25' the boundary ascends the Southwest Branch, passes through a lake near its head, and so up a small stream which falls into the lake from the west to the source of that stream, which has been selected as the source of the Southwest Branch.
On the Southwest Branch there are two principal forks, at each of which two monuments have been erected, one on each bank of the river immediately above the forks and upon the branch established as the boundary. The maps point out their positions. At the mouth of the small stream selected as the source of the Southwest Branch a monument has been erected upon a delta formed by two small outlets. Above those outlets three other monuments have been placed at intervals upon the same stream.