Mr. Fish, Secretary of State, to Mr. Roberts, Spanish minister.

Sir: I have the honor to acknowledge the receipt of your note of yesterday, relative to the alleged fitting out, in the city of New York, of a military expedition for the purpose of joining the insurgents in Cuba, and to inform you, in reply, that immediately upon its receipt a copy thereof was brought to the attention of the Attorney General, who, it is not doubted, has taken the necessary precautions to prevent the departure of the expedition referred to, should the statements contained in your note be found to be correct.

I am, sir, with the highest consideration, your obedient servant,

HAMILTON FISH.

Señor Don M. Lopez Roberts, &c., &c.