The late negotiations at Washington have furnished an apposite illustration of the truth of the author’s remarks. Mr. Buchanan, towards the conclusion of his last letter to Mr. Pakenham, addressed an argument to the British Minister, of the kind known to logicians as the argumentum ad verecundiam:—“Even British geographers have not doubted our title to the territory in dispute. There is a large and splendid globe now in the Department of the State, recently received from London, and published by Maltby & Co., manufacturers and publishers to ‘The Society for the Diffusion of Useful knowledge,’ which assigns this territory to the United States.” The history, however, of this globe is rather curious. It was ordered of Mr. Malby (not Maltby) for the Department of State at Washington, before Mr. Everett quitted his post of Minister of the United States in this country. It no doubt deserves the commendation bestowed upon it by Mr. Buchanan, for Mr. Malby manufactures excellent globes; but the globe sent to Washington was not made from the plates used on the globes published under the sanction of “The Society for the Diffusion of Useful Knowledge,” though this is not said by way of disparagement to it. The Society, in its maps, has carried the boundary line west of the Rocky Mountains, along the 49th parallel to the Columbia River, and thence along that river to the sea; but in its globes the line is not marked beyond the Rocky Mountains. Mr. Malby, knowing that the globe ordered of him was intended for the Department of State at Washington, was led to suppose that it would be more satisfactorily completed, as it was an American order, if he coloured in, for it is not engraved, the boundary line proposed by the Commissioners of the United States. The author would apologise for discussing so trifling a circumstance, had not the authorities of the United States considered the fact of sufficient importance to ground a serious argument upon it.

In conclusion, the Author must beg pardon of the distinguished diplomatists in the late negotiations at Washington, whose arguments he has subjected to criticism, if he has omitted to notice several portions of their statements, to which they may justly attribute great weight. It is not from any want of respect that he has neglected them, but the limits of his work precluded a fuller consideration of the subject.

London, Jan. 22, 1846.

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