Augusta, July 17 The Savannah Republican of this morning has a dispatch, dated Knoxville, 15th which says a heavy skirmish occurred that morning at Wallace's Cross Roads. Two regiments of the enemy's infantry and calvary were engaged with four of our companies under the command of Col. McLine. Ten were killed and missing on our side. Davenport Daily Gazette, Davenport, Iowa, July 24, 1862