From Petersburg.
Petersburg, August 20--11 o'clock A. M.
--Lieutenant-General A. P. Hill commanded our forces in the fight yesterday evening.
Warren was strengthened by the Ninth corps.
The enemy were driven about three-quarters of a mile in front and back about two miles on the flank.
Twenty-two hundred prisoners, including nine commissioned officers, were captured.
Night ended the fight, which was a very considerable affair.
The fight has not been resumed thus far to-day.
The enemy still hold possession of the Weldon railroad.
Our losses are not heavy.
General Clingman was wounded.
Major Lawson, of the Fity-ninth Virginia, was killed.
The enemy's loss in killed and wounded was unascertained.
The Yankee General Crawford is reported by the prisoners as killed.
There was the usual artillery duel between midnight and day between the lines in front of this city.
No casualties are reported. 