Mr. Seward to Lord Lyons.

My Lord: I have the honor to acknowledge the receipt of your two communications under the respective dates of yesterday and to-day, relative to Mr. Jonathan Steele, the captain of the captured British steamer Banshee, and to inform you that a copy of them has been submitted to the consideration of the Secretary of the Navy.

The affidavit which accompanied the first of these communications is herewith returned,

I have the honor to be, with high consideration, your lordships obedient servant,

WILLIAM H. SEWARD.

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