Mr. Seward to Mr. de Geofroy

Sir: Referring to your communication of the 12th ultimo, relative to an alleged movement on the part of certain refugees to aid President Juarez, (a translation of which was communicated to the Secretary of the Navy,) I have the honor to state, in reply, that this department is informed, by a letter of the 2d instant from the Navy Department, that Acting Rear-Admiral Pearson has been apprised of the supposed movement, and that he, with those of his command In the Pacific squadron, have been instructed to use proper vigilance with the view of intercepting any expedition that may be fitted out in the United States in violation of its laws or international law, and which may embark from San Francisco, or other ports in California, to take part in the difficulties now existing in Mexico.

Accept, sir, the renewed assurance of my high consideration.

WILLIAM H. SEWARD.

Mr. L. de Geofroy, &c., &c., &c.