Lord Lyons to Mr. Seward.

Sir: Her Majesty’s principal secretary of state for foreign affairs has directed me to make known to the government of the United States suspicions which have been excited respecting an American brigantine called the Myra.

Her Majesty’s commissioner at Loanda, in a report dated at that place on the 14th March last, reports that he received information on the previous day that the Myra had entered the port of Mossamedes on the 23d of February last, and, although her papers were correct and she was ostensibly fitted out as a whaler, her size and other circumstances seemed to render it extremely probable that she was really destined to. be employed in the slave trade.

I have the honor to be, with the highest consideration, sir, your most obedient, humble servant,

LYONS.

Hon. William H. Seward, &c., &c., &c.,