The Fourth Cavaluy.— Wo pub 'lislicd last wook a letter from tho Chaplain of t!io Fourth, giving the lt;Jo-» details of casualties, e in tho liogi- : mont, with tho exception of Company | I, Capt. Taylor. A portion of this j Company was detailed to act as body- | guard to (ion. M'Call. In that portion of 20 men tho casualties are as follows: Killed— Sergeant Drum ; jI Wounded—W.S. Keller, shot through jtho leg. blissing—Corporals J. MHamilton, King, Privates GeorgoHarry and II W. Jonos.This Company was in all tho fights and under tho load of its gallant Captain behaved nobly.