Mr. Seward to Lord Lyons.

My Lord: I duly received your note of the 23d instant, on the subject of an alleged disregard by the United States attorney at Key West of the wishes of this government with reference to the mails of friendly powers found on board of captured vessels.

In reply, I have the honor to acquaint you that proper instructions upon the subject have been given to that officer.

I have the honor to be your very obedient servant,

WILLIAM H. SEWARD.

Right Hon. Lord Lyons, &c., &c., &c.