Vice-Admiral Porter, for Secretary of the Navy, to Mr. Fish, Secretary of State.

Sir: I have the honor to acknowledge the receipt of your communication in relation to the Spanish gun-boats.

Orders have been issued to the commanding officer at New York to afford all the aid in his power to assist in preventing their departure, and three men-of-war have been ordered to that place.

I have the honor to be, &c.,

DAVID D. PORTER,
For Secretary of Navy.

Hon. Hamilton Fish,
Secretary of State.