...eneral McClernand's brigade went to within seven miles of Columbus, and encamped on Thursday night in eight of the rebel watch-fires. He afterwards visited the towns of Millburn, Lovelaceville, and Blandville , surveying all the roads as he went. A part of Gen. Smith's command will return to Paducah to-day. Forney, in his letter to the Press, from Washington says: "Some of our public m...