In the meantime the undersigned avails himself of the present occasion to offer a few remarks upon certain parts of Mr. Fox's note of the 10th ultimo. After adverting to the suggestion heretofore made by the British Government that a conventional line equally dividing the territory in dispute between the two parties should be substituted for the line described by the treaty, and regretting the constitutional incompetency of the Federal Government to agree to such an arrangement without the consent of the State of Maine, Mr. Fox refers to the conventional line adopted, although different from that designated by the treaty, with respect to the boundary westward from the Lake of the Woods, and asks, "Why should such a line not be agreed to likewise for the boundary eastward from the river Connecticut?" The reply to this question is obvious. The parallel of latitude adopted on the occasion referred to as a conventional substitute for the treaty line passed over territory within the exclusive jurisdiction of the General Government without trenching upon the rights or claims of any individual member of the Union, and the legitimate power of the Government, therefore, to agree to such line was perfect and unquestioned. Now in consenting to a conventional line for the boundary eastward from the river Connecticut the Government of the United States would transcend its constitutional powers, since such a measure could only be carried into effect by violating the jurisdiction of a sovereign State of the Union and by assuming to alienate, without the color of rightful authority to do so, a portion of the territory claimed by the State.