Mr. Lincoln to Mr. Frelinghuysen.

Sir: I have the honor to acknowledge the receipt of your letter of the 1st instant, inclosing a copy of a note of the 18th ultimo, in which the late Mexican minister at this capital reports depredations in the State of Sonora by the Chiricahua Indians who escaped from the San Carlos Reservation, and asks, pursuant to the instructions of his government, that renewed vigilance be exerted in that quarter to prevent similar occurrences in future.

In reply, I beg to inform you that, in the absence of the General of the Army from Washington, instructions will be sent direct to the commanding general Military Division of the Pacific, to take all possible steps to prevent the incursions of these Indians.

The General of the Army has already started on a journey intending to examine that country, and a copy of your letter and its inclosure will be sent him in order that he may have his attention brought to this subject while there.

Very respectfully, &c.,

ROBERT T. LINCOLN,
Secretary of War.