In a note of 31st May the British minister suggested that this perplexed and hitherto interminable question could only be set at rest by an abandonment of the defective description of boundary contained in the treaty, by the two Governments mutually agreeing upon a conventional line more convenient to both parties than those insisted upon by the commissioners under the fifth article of the treaty of Ghent, or that suggested by the King of the Netherlands.
Mr. McLane remarked in reply (June 5) that the embarrassments in tracing the treaty boundary had arisen more from the principles assumed and from the manner of seeking for it than from any real defect in the description when properly understood; that in the present state of the business the suggestion of Sir Charles R. Vaughan would add to the existing difficulties growing out of a want of power in the General Government under the Constitution of the United States to dispose of territory belonging to either of the States of the Union without the consent of the State; that as a conventional line to the south of and confessedly variant from that of the treaty would deprive the State of Maine of a portion of the territory she claims, it was not probable that her consent to it would be given while there remained a reasonable prospect of discovering the line of the treaty of 1783, and that the President would not be authorized, after the recent proceedings in the Senate, to venture now to agree upon a conventional line without such consent, whilst the proposition submitted in April afforded not only a fair prospect, but in his opinion the certain means, of ascertaining the boundary called for by the treaty of 1783 and of finally terminating all the perplexities which have encompassed that subject.
In February, 1834, Sir Charles R. Vaughan, after submitting certain observations intended to controvert the positions assumed by the United States on the subject of the constitutional difficulty by which the American Government was prevented from acquiescing in the arrangement recommended by the King of the Netherlands for the settlement of the boundary in the neighborhood of the St. John, asserted that the two Governments bound themselves by the convention of September, 1827, to submit to an arbiter certain points of difference relative to the boundary between the American and British dominions; that the arbiter was called on to determine certain questions, and that if he has determined the greater part of the points submitted to him his decision on them ought not to be set aside merely because he declares that one remaining point can not be decided in conformity with the words of the treaty of 1783, and therefore recommends to the parties a compromise on that particular point; that the main points referred to the arbiter were three in number; that upon the second and third of these he made a plain and positive decision; that upon the remaining point he has declared that it is impossible to find a spot or to trace a line which shall fulfill all the conditions required by the words of the treaty for the northwest angle of Nova Scotia and for the highlands along which the boundary from that angle is to be drawn; yet that in the course of his reasoning upon this point he has decided several questions connected with it upon which the two parties had entertained different views, viz:
"First. The arbiter expresses his opinion that the term 'highlands' may properly be applied not only to a hilly and elevated country, but to a tract of land which, without being hilly, divides waters flowing in different directions, and consequently, according to this opinion, the highlands to be sought for are not necessarily a range of mountains, but rather the summit level of the country.
"Second. The arbiter expresses his opinion that an inquiry as to what were the ancient boundaries of the North American Provinces can be of no use for the present purpose, because those boundaries were not maintained by the treaty of 1783 and had in truth never been distinctly ascertained and laid down.
"Third. The arbiter declares that the northwest angle of Nova Scotia mentioned in the treaty of 1783 is not a point which was then known and ascertained; that it is not an angle which is created by the intersection of any lines of boundary at that time acknowledged as existing, but that it is an angle still to be found and to be created by the intersection of new lines, which are hereafter to be drawn in pursuance of the stipulations of the treaty; and further, that the nature of the country eastward of the said angle affords no argument for laying that angle down in one place rather than in another.
"Fourth. He states that no just argument can be deduced for the settlement of this question from the exercise of the rights of sovereignty over the fief of Madawaska and over the Madawaska settlement.
"Fifth. He declares that the highlands contemplated in the treaty should divide immediately, and not mediately, rivers flowing into the St. Lawrence and rivers flowing into the Atlantic, and that the word 'divide' requires contiguity of the things to be divided.
"Sixth. He declares that rivers falling into the Bay of Chaleurs and the Bay of Fundy can not be considered according to the meaning of the treaty as rivers flowing into the Atlantic, and specifically that the rivers St. John and Restigouche can not be looked upon as answerable to the latter description.
"Seventh. He declares that neither the line of boundary claimed by Great Britain nor that claimed by the United States can be adjudged as the true line without departing from the principles of equity and justice as between the two parties."