First. A treaty to settle and define the boundaries between the territories of the United States and the possessions of Her Britannic Majesty in North America, for the suppression of the African slave trade, and the surrender of criminals fugitive from justice in certain cases.
Second. A correspondence on the subject of the interference of the colonial authorities of the British West Indies with American merchant vessels driven by stress of weather or carried by violence into the ports of those colonies.
Third. A correspondence upon the subject of the attack and destruction of the steamboat Caroline.
Fourth. A correspondence on the subject of impressment.
If this treaty shall receive the approbation of the Senate, it will terminate a difference respecting boundary which has long subsisted between the two Governments, has been the subject of several ineffectual attempts at settlement, and has sometimes led to great irritation, not without danger of disturbing the existing peace. Both the United States and the States more immediately concerned have entertained no doubt of the validity of the American title to all the territory which has been in dispute, but that title was controverted and the Government of the United States had agreed to make the dispute a subject of arbitration. One arbitration had been actually had, but had failed to settle the controversy, and it was found at the commencement of last year that a correspondence had been in progress between the two Governments for a joint commission, with an ultimate reference to an umpire or arbitrator with authority to make a final decision. That correspondence, however, had been retarded by various occurrences, and had come to no definite result when the special mission of Lord Ashburton was announced. This movement on the part of England afforded in the judgment of the Executive a favorable opportunity for making an attempt to settle this long-existing controversy by some agreement or treaty without further reference to arbitration.
It seemed entirely proper that if this purpose were entertained consultation should be had with the authorities of the States of Maine and Massachusetts. Letters, therefore, of which copies are herewith communicated, were addressed to the governors of those States, suggesting that commissioners should be appointed by each of them, respectively, to repair to this city and confer with the authorities of this Government on a line by agreement or compromise, with its equivalents and compensations. This suggestion was met by both States in a spirit of candor and patriotism and promptly complied with. Four commissioners on the part of Maine and three on the part of Massachusetts, all persons of distinction and high character, were duly appointed and commissioned and lost no time in presenting themselves at the seat of the Government of the United States. These commissioners have been in correspondence with this Government during the period of the discussions; have enjoyed its confidence and freest communications; have aided the general object with their counsel and advice, and in the end have unanimously signified their assent to the line proposed in the treaty.
Ordinarily it would be no easy task to reconcile and bring together such a variety of interests in a matter in itself difficult and perplexed, but the efforts of the Government in attempting to accomplish this desirable object have been seconded and sustained by a spirit of accommodation and conciliation on the part of the States concerned, to which much of the success of these efforts is to be ascribed.
Connected with the settlement of the line of the northeastern boundary, so far as it respects the States of Maine and Massachusetts, is the continuation of that line along the highlands to the northwesternmost head of Connecticut River. Which of the sources of that stream is entitled to this character has been matter of controversy and of some interest to the State of New Hampshire. The King of the Netherlands decided the main branch to be the northwesternmost head of the Connecticut. This did not satisfy the claim of New Hampshire. The line agreed to in the present treaty follows the highlands to the head of Halls Stream and thence down that river, embracing the whole claim of New Hampshire and establishing her title to 100,000 acres of territory more than she would have had by the decision of the King of the Netherlands.
By the treaty of 1783 the line is to proceed down the Connecticut River to the forty-fifth degree of north latitude, and thence west by that parallel till it strikes the St. Lawrence. Recent examinations having ascertained that the line heretofore received as the true line of latitude between those points was erroneous, and that the correction of this error would not only leave on the British side a considerable tract of territory heretofore supposed to belong to the States of Vermont and New York, but also Rouses Point, the site of a military work of the United States, it has been regarded as an object of importance not only to establish the rights and jurisdiction of those States up to the line to which they have been considered to extend, but also to comprehend Rouses Point within the territory of the United States. The relinquishment by the British Government of all the territory south of the line heretofore considered to be the true line has been obtained, and the consideration for this relinquishment is to inure by the provisions of the treaty to the States of Maine and Massachusetts.
The line of boundary, then, from the source of the St. Croix to the St. Lawrence, so far as Maine and Massachusetts are concerned, is fixed by their own consent and for considerations satisfactory to them, the chief of these considerations being the privilege of transporting the lumber and agricultural products grown and raised in Maine on the waters of the St. Johns and its tributaries down that river to the ocean free from imposition or disability. The importance of this privilege, perpetual in its terms, to a country covered at present by pine forests of great value, and much of it capable hereafter of agricultural improvement, is not a matter upon which the opinion of intelligent men is likely to be divided.