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 deg. 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—­

         &nb
sp;                                                     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

Total 121-1/4

IV.

A map marked L squared, on a scale of 1:400,000, exhibiting the lines respectively claimed by the two nations under the treaty of 1783, as well as that adopted by the treaty of 1842, is herewith presented.  By reference thereto the operations of the several divisions during the present and previous years will be better understood.

For a more particular view of the surveys and explorations made under the direction of each of the commissioners, including descriptions of the face of the country, navigation of streams, etc., the undersigned respectfully refer to their respective narratives hereto appended, and to the maps of detail deposited by each in the Department of State.

All which is respectfully submitted.

JAS. RENWICK,
  A. TALCOTT,
    JAMES D. GRAHAM,
      Commissioners.

APPENDIX No. 1.

OPERATIONS OF THE DIVISION UNDER THE DIRECTION OF JAMES RENWICK, LL.D.,
CHAIRMAN OF THE BOARD.

I.—­Operations during the year 1841.

1.  At as early a period as there was any probability of the country being accessible two engineers were dispatched from the city of New York for the purpose of exploring the Rimouski River.  This had been crossed by the commissioner late in the previous season.  It had been ascertained that it took its source much farther to the south than was represented on any map, and that at its head would be the greatest difficulty in the intended researches.  It was, besides, considered necessary that skillful boatmen and practiced woodsmen should be engaged in Canada.  These it was believed could be found in Quebec, and the chief of this detachment, with an appointment as acting commissioner, was directed to perform this duty on his route.