On the line of Messrs. Featherstonhaugh and Mudge between the Metjarmette portage and the Cocumgamoc Mountains-- Feet The maximum elevation is 2,302 The minimum elevation is 987
This part of the line of Messrs. Featherstonhaugh and Mudge derives its apparent advantage from the fact that it crosses the summit and occupies the eastern slope of the highlands claimed by the United States. Notwithstanding this, the difference in their elevation is not such as to give it any decided superiority in its highland character.
On the American line from Lake Etchemm to the river Ouelle-- Feet The maximum height is 2,854 The minimum height is 1,306
On the line of Messrs Featherstonhaugh and Mudge from the Cocumgamoc Mountains to the head waters of the Aroostook-- The maximum height is 1,268 The minimum height is 880
On the parts of the line thus contrasted the maximum height of that claimed by Great Britain is less elevated than the lowest gap of that claimed by the United States.
On the third portion of the American line
From the head of the Ouelle to the Temiscouata portage-- Feet The maximum height is 2,231 The minimum height is 853
From the point where the line first crosses the Temiscouata portage to Mount Paradis-- The maximum height is 1,983 The minimum height is 906
From the Temiscouata portage to the head of the Abagusquash-- The maximum height is 1,510 The minimum height is 676
From Abagusquash to the Rimouski Lake-- The maximum height is 1,824 The minimum height is 651
From the Rimouski Lake to the northwest angle-- The maximum height is 1,841 The minimum height is 1,014
The greatest elevation of the whole of the third part of the American line, therefore, is 2,231 The minimum is 651
The termination of the exploring meridian line falls into this part of the American line. Its height of 1,519 feet was determined by two separate observations, compared with others taken on Lake Johnson. The height of the latter was calculated at 1,007 feet from a series of observations continued for seventeen days, and is believed to be as accurate as the method of the barometer is susceptible of.
This height of the termination of that line is estimated by Messrs. Featherstonhaugh and Mudge at no more than 388 feet, and that of the lake at no more than 363. In this estimate they reject the indications of their own barometers, because the results of them would have contradicted the previous impressions which seem to have governed all their operations, viz, that the point claimed by the United States as the northwest angle of Nova Scotia is not in an elevated region of country.[34]