By the treaty of 1783 the line is to proceed down the Connecticut
River to the forty-fifth degree of north latitude, and thence west by
that parallel till it strikes the St. Lawrence. Recent examinations
having ascertained that the line heretofore received as the true line of
latitude between those points was erroneous, and that the correction of
this error would not only leave on the British side a considerable tract
of territory heretofore supposed to belong to the States of Vermont and
New York, but also Rouses Point, the site of a military work of the
United States, it has been regarded as an object of importance not only
to establish the rights and jurisdiction of those States up to the line
to which they have been considered to extend, but also to comprehend
Rouses Point within the territory of the United States. The
relinquishment by the British Government of all the territory south of
the line heretofore considered to be the true line has been obtained,
and the consideration for this relinquishment is to inure by the
provisions of the treaty to the States of Maine and Massachusetts.

The line of boundary, then, from the source of the St. Croix to the St.
Lawrence, so far as Maine and Massachusetts are concerned, is fixed by
their own consent and for considerations satisfactory to them, the chief
of these considerations being the privilege of transporting the lumber
and agricultural products grown and raised in Maine on the waters of the
St. Johns and its tributaries down that river to the ocean free from
imposition or disability. The importance of this privilege, perpetual
in its terms, to a country covered at present by pine forests of great
value, and much of it capable hereafter of agricultural improvement, is
not a matter upon which the opinion of intelligent men is likely to be
divided.