Mr. Seward to Mr. Tassara.

The undersigned, Secretary of State of the United States, has the honor to acknowledge the receipt of Mr. Tassara’s note of the 26th ultimo, in continuation of previous notes on the subject of occurrences which took place at New Orleans in the month of June last, on the arrival and departure of the Spanish steamer Cardenas and the United States steamer Roanoke.

In his note of the 16th of July last the undersigned had the honor to inform Mr. Tassara that a transcript of his communication of the 28th of the preceding month, on the subject referred to, would be sent to the special agent of the United States, then at New Orleans, and that he would be instructed to make a prompt investigation of the complaint. The return of that officer, however, to this city, while the instruction was on its way to New Orleans, has rendered a different disposition of the subject necessary, and the undersigned has accordingly transmitted to the Secretary of War copies of Mr. Tassara’s several communications, with the request that he would cause an examination of the complaint and allegations in question to be made without delay.

The undersigned avails himself of the occasion to offer to Mr. Tassara renewed assurances of his very high consideration.

WILLIAM H. SEWARD.

Señor Don Gabriel Garcia y Tassara, &c., &c., &c.