Lord Lyons to Mr. Seward.

Sir: I had yesterday afternoon the honor to receive your note of the same day communicating to me intelligence which you had received from the United States consul general at Montreal, respecting a gathering of enemies of the United States at Windsor, in Canada. I immediately transmitted the intelligence to the governor general at that province.

I have the honor to be, with the highest consideration, sir, your most obedient, humble servant,

LYONS.

Hon. William H. Seward, &c., &c.