Abolition prisoners arrived.
--Twenty Abolition prisoners arrived at the Libby prison yesterday from Gordonsville, in charge of Serg't H B Daniel, of Capt. Farrell's cavalry company. They were captured on Occoquan creek, on Sunday morning last, by a brilliant dash made by the above company, who swam the creek, and, passing the outpost pickets, surpassed the prisoners while asleep. On the return of the company it was attacked, and several men on both sides were wounded. --Capt. Farrell is said to have been mortally wounded. The captives belong in equal parts to companies F and B of the 2d Pennsylvania cavalry regiment.
