7. A survey of the river St. Francis from its mouth to the outlet of
Lake St. Francis.
8. In making astronomical observations for the latitude and longitude of
the Grand Falls and the mouths of the Grand, the Green, Madawaska, Fish,
and St. Francis rivers.
Early in July a party under the direction of an officer of Topographical
Engineers was sent into the field and directed to occupy the most
northern astronomical station fixed the preceding year upon the true
meridian of the monument at the source of the river St. Croix, with the
view of being prepared to complete its trace to the northwest angle of
Nova Scotia before the termination of the season in case the pending
negotiations for a conventional boundary should fail.
The true meridian was in this way prolonged to a point 19 miles north
of the station alluded to of last year, or 13-1/2 miles north of its
intersection with the river St. John, reaching to the summit of the
height immediately south of Grand River, where a permanent station was
fixed. The point thus fixed is 90-3/4 miles north of the monument at
the source of the St. Croix.
This portion of the work was performed by the 15th of August, at which
period it was considered inexpedient to incur the expense of continuing
it any farther.
A party under the direction of another officer of Topographical
Engineers, which took the field also in July was charged with the
surveys of the Little Madawaska River, the Eagle or Cheaplawgan Lakes,
the portion of Fish River from the outlet of Lake Winthrop--one of the
Eagle group--to its débouché into the St. John, of the river St. John,
thence to the meridian of the source of the St. Croix, and finally of
the Alleguash from its mouth to its source.
The Little Madawaska was ascended in bateaux from its mouth to its
source, which is found in the Madawaska Lakes, and a trace of the river
was made by coursing with a compass and estimating the distances, which
were checked by astronomical observations for latitude and longitude.
The position of its mouth had been fixed by the surveys of the preceding
year, and observations for latitude and longitude were made at a point
intermediate between its mouth and its source and also at the junction
of the two lakes which form its source. The trace of the river was
corrected so as to agree with the results of these observations before
being laid down upon the map.
A portage of 5-1/4 miles was cut from the Madawaska to the Eagle Lakes,
which are only 4-3/4 miles apart in a direct line. The party transported
their baggage and boats by this portage and launched them on Lake
Sedgwick, the most southern and largest of the Eagle group.
This group, which is composed of the Winthrop, Sedgwick, Preble, Bear,
and Cleveland lakes, being all connected one with another by water
communications between them, was carefully surveyed by triangulating
them and coursing their shores with the chain and compass, except those
parts which were so straight as to render the work sufficiently accurate
by sketching those portions between consecutive points of triangulation
of no great distance apart. They were also sounded so far as to obtain
their general depths.
The survey was continued from the outlet of Lake Winthrop down Fish
River to its mouth, which was found to be the only outlet from this
group to the river St. John.
Lake Cleveland, the most northern and deepest of the group, was
connected in position with the river St. John at a point 2 miles below
the upper chapel of the Madawaska settlement, by a chained and coursed
line following the portage represented on the map 5-1/6 miles long.
The Alleguash was ascended in the month of October in bateaux and canoes
from its mouth to its source in Lake Telos, a distance of about 94
miles. The river and its lakes were coursed by a compass, the distances
estimated, and the projection resulting therefrom corrected before being
placed upon the map by means of astronomical observations at eight
intermediate points between its mouth and its source. The lakes were
triangulated by means of magnetic bearings as far as was practicable,
in order to obtain their widths and general contour. In the vicinity
of Chamberlain Lake use has also been made of a recent survey of Mr.
Parrott, a surveyor in the employ of the State of Maine, to whom we
acknowledge ourselves indebted for the aid which this portion of his
valuable labors furnished us.
Between the head of Lake Telos and Webster Pond, one of the sources
of the East Branch of the Penobscot, there is a portage of only 1 mile
and a half. This, together with a small cut or canal, made in 1841 to
connect the waters of Lake Telos with those of Webster Pond, enabled the
party which made this survey to proceed with their boats and baggage
down the Penobscot to Bangor, where they and their surplus stores were
disposed of.
A survey of the river St. John was made in the month of September with
the chain and compass from the mouth of Fish River to the intersection
of the meridian of the monument at the source of the St. Croix with the
St. John. This survey was afterwards extended eastward to the Grand
Falls, in order to connect with the astronomical station established
there, and westward to the mouth of the Alleguash, embracing a distance
of 87 miles. The islands were all surveyed, and the channels on either
side of them sounded.
The commissioner, having had other duties assigned him in reference
to the question of boundary, did not take the field in person until
September. Between the middle of that month and the middle of December
he was occupied in performing the field duties assigned him by the
Department of State.
The party conducted by him in person made the astronomical observations
for the determination of the latitude and longitude of the Grand Falls
of the St. John, and of the mouths of the Grand, Green, Madawaska, Fish,
and St. Francis rivers, all tributary to the St. John.
The same party also made a survey of the river St. Francis from its
mouth to the outlet of Lake St. Francis, a distance of 81 miles.
This river was coursed by means of a compass, and whenever the nature
of the shores would permit the distances from bend to bend were either
measured with a chain or paced. Through the greater part of the stream,
however, the impediments offered by the thick and small growth near the
shores rendered this degree of minuteness impracticable and a resort to
estimating the distances by the eye, well practiced by previous actual
measurements, became necessary.
Before putting the trace of the river thus derived upon the map it was
adjusted to correspond with the results of astronomical observations for
latitude and longitude at twelve intermediate points between its mouth
and the outlet of Lake St. Francis. Its three principal lakes, viz,
Pettiquaggamas, Petteiquaggamak, and Pohenagamook, were triangulated and
sounded as exhibited by the maps of detail yet to be handed in of the
operations of this division.
A profile of the river, exhibiting the slope of the country through
which it flows, was obtained by barometric observations made at fifteen
points between its mouth and the bridge where it is intersected by the
Grand portage road.
A connection was made with Long Lake, a tributary to Lake Temiscouata,
by a chained line from a point on the St. Francis 2 miles below the
mouth of Blue River to the western shore of Long Lake, by which it was
ascertained that the shore of this lake approached within 2-3/4 miles of
the river St. Francis.
The outlet of Lake Pohenagamook was reached in a distance of 49-3/4
miles from the mouth of the St. Francis following the sinuosities of the
river on the 18th of October.
A camp was established on the southwest shore of the lake at its outlet
for the purpose of making the necessary astronomical observations to
determine the latitude and longitude of this position. Ten days were
spent here for this object, out of which we had only three nights that
were favorable for observation. These were improved as far as possible,
and the results obtained, combined with those obtained by Captain
Talcott's parties on the Northwest and Southwest branches of the St.
John, have furnished the elements for laying down upon the general map
the straight lines which show the boundary as it is required to run
between the highlands and the river St. John under the treaty of 1842.
These furnish data for an accurate exhibition of the extent of territory
included by this portion of the boundary as fixed by that treaty.
The south shore of Lake Pohenagamook forms an angle of about 100° with
the direction of the stream which flows from it, and marks with great
certainty the point at which, according to the late treaty, the straight
line is to be commenced in running the boundary southwestward to the
Northwest Branch of the river St. John.
The work of this division was connected with that of Captain Talcott's
division of the preceding year by noting the position of a common point
on the western shore of Lake Pohenagamook near its head.
The commissioner and his party reached the Grand portage, or British
military road, where it crosses the river St. Francis on the 2d of
November, and connected their work with that of Professor Renwick's
division of the preceding year at the bridge near Fournier's house.
Observations were also made at this bridge for the latitude and
longitude, when the weather was favorable, between the nights of the
2d and 5th of November, and a connection was made in longitude with
the meridian of Quebec by comparisons of the local time with three
chronometers transported from the first to the last mentioned place
between the 6th and 10th of November.
This comparison was repeated on the return of the commissioner by
observing again at the St. Francis bridge before mentioned on the night
of the 10th of December, with the thermometer ranging during these
observations from 11 to 15° below zero of Fahrenheit's scale, there
being then near 4 feet of snow upon the ground. The commissioner then
proceeded by the Grand portage road, and the road which pursues the
margin of Temiscouata Lake and the valleys of the Madawaska and St. John
rivers, to the mouth of Green River, where on the night of the 12th of
December he again observed at the same point where his observations of
the 29th of September were made while ascending the St. John. These
completed, he proceeded to the Grand Falls, and on the 14th of December
discharged his party, which terminated his field duties for the season.
The distance surveyed along the new line of boundary by this division
the past season is--
Miles.
1. Along the river St. John from the meridian of the
monument of the source of the St. Croix to the mouth
of the river St. Francis 71-1/2
2. Along the river St. Francis from its mouth to the
outlet of Lake Pohenagamook 49-3/4