Mr. Seward to Mr. Dayton.

No. 404.]

Sir: Recurring to your No. 341, of the 3d instant, and to my No. 399, I have now to inform you that no attempt at a blockade of the port of Brest will be made by our navy to prevent the departure of the piratical vessel, Florida.

I am, sir, your obedient servant,

WILLIAM H. SEWARD.

Hon. William L. Dayton, Esq.