Washington, Oct. 25.—Commodore McKean’s dispatches are received at the Navy Department. Capt. Pope of the Richmond, reports the hole made in her by the ram was two feet below the water line and five inches in circumference. At the first alarm, the crew cooly repaired to quarters, and as the ram passed abreast the Richmond, the entire port battery was discharged at her, with what effect, it was impossible to discover in the darkness. A red light was shown as a signal of danger, and the entire squadron was under way in a very few minutes, the Richmond covering the retreat. The Preble went over the bar while the Vincennes and Richmond grounded.