_Mr. Stevenson to Lord Palmerston_. 23 PORTLAND PLACE, _August 10, 1837_. LORD PALMERSTON, etc.: The undersigned, envoy extraordinary and minister plenipotentiary from the United States, has the honor, in pursuance of instructions from his Government, to transmit to Lord Palmerston, Her Majesty's principal secretary of state for foreign affairs, copies of sundry official documents detailing the circumstances under which a most unwarrantable outrage has recently been committed by the authorities of the Province of New Brunswick upon the rights and liberty of a citizen of the United States. From these papers it appears that Ebenezer S. Greely, a citizen of the State of Maine, was duly appointed for the purpose of taking an enumeration of the inhabitants of that State by an act of its legislature; that on the 6th of June last, whilst Mr. Greely was engaged in performing this duty and taking down the names of the inhabitants residing in that part of the disputed territory claimed by the United States as lying within the limits of Maine, he was forcibly arrested by the authorities of New Brunswick, immediately transported in custody to the town of Frederickton, and imprisoned in the public jail, where he still remains. This proceeding by the authorities of New Brunswick, having produced, as might justly have been expected, very deep excitement in Maine, was followed by an immediate appeal from the governor of that State to the Government of the United States for intervention and redress. This application on the part of Maine having received the special consideration of the President, the undersigned has been instructed to lose no time in presenting the subject to the early and earnest attention of Her Majesty's Government, and demanding not only the immediate liberation of Mr. Greely from imprisonment, but indemnity for the injuries that he has sustained.