Mr. Seward to Lord Lyons,.

My Lord: I have the honor to acknowledge the receipt of your note of this date and, of its accompaniments, relative to the case of the British vessel Scylla, seized by the United States military authorities on the Rio Grande.

In reply, I have the honor to acquaint you that the subject shall receive due attention.

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

WILLIAM H. SEWARD.

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