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.
Upon the crest of the dividing ridge, very close to the source of the Southwest Branch, a large monument has been erected. It is the first point in the highlands, and from it the boundary runs along the crest in a southerly direction, passing near to the southeastern shore of the Portage Lake, and so on to a large monument erected on a small eminence on the east side of the Kennebec road. Thence it passes through a dwelling house called Tachereau's, which was standing there at the time the line was run; so, by a tortuous course, it runs to the top of Sandy Stream Mountain; thence, inclining to the southwest, it runs over Hog Back the First, as shown in the maps; thence toward Hog Back the Second, which it leaves on the north side. Further on, at the head of Leech Lake, there is a stream which divides its waters and flows both into Canada and into the United States. The boundary has been made to run up that stream a short distance from the fork where the waters divide to a second fork; thence between the streams which unite to form that fork, and then to ascend again the dividing ridge. A monument has been erected at the fork first mentioned, where the waters divide.
