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Updated: May 2, 2025
H.B. Renwick were determined by a reflecting repeating circle of Dollond; those on Mr. Lally's by a good sextant. The latitudes and times at Grand Metis, the river Du Loup, and the stationary camp on Mistigougeche and Abagusquash were principally determined from observations made with the Dollond circle.
Lawrence and Lake Temiscouata by the Temiscouata portage, and with the St. Lawrence a second time by the Metis and Mistigougeche, and with the St. John by Green River, has been actually surveyed. This result is one that neither the Department in its original instructions nor the commissioner on his first view of the country had contemplated.
The Mistigougeche was found to be intercepted by a fall of a few feet, which could not be passed by the boats when loaded, although the Penobscot men boldly and successfully carried theirs up when empty, in which feat they were imitated by the voyageurs, who had at first deemed it impossible.
Lally also came in, and both were assembled at Metis on the 14th, whence the commissioner set out instantly for the river Du Loup, which had been chosen as the base of further operations. The circumstances of the operations up the Metis and Metis and Mistigougeche had been upon the whole favorable.
The guide also stated that the Mistigougeche was a much less difficult stream than Metis. Of the comparative facility, except for a few miles of the latter, no opportunity for judging was obtained; but these were so difficult as to confirm his statement. On the other hand, the former was found to be much worse than it had been represented by him.
The river Metis and its branch, the Mistigougeche, were surveyed by an azimuth compass of Smallcaldus construction, and the distances measured by a micrometric telescope by Ertil, of Munich. The courses of the rest of the lines were determined by compasses of similar construction, and the distances measured by chains of 100 feet constructed by Dollond, of London, and Brown, of New York.
This instrument, which had given satisfactory results on Metis and Mistigougeche in 1841, was still more accurate in the present survey.
The first party was directed to operate in the first place toward the west, the second toward the east, upon the height of land until they should meet each other's marks. The party of Mr. H.B. Renwick was directed, therefore, to proceed from the head of Tuladi and reach if possible the head of Rimouski, thus forming a connection with the line explored from the head of Mistigougeche; that of Mr.
The result of the astronomic observations seemed to show that the main stream would lead too far to the eastward, and after mature deliberation it was resolved that the course should be retraced and the Mistigougeche ascended. The first part of the operation was attended with little delay. Half an hour sufficed for reaching the forks, whence the party had been six hours in mounting.
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