Interesting from the Potomac Division.
--A gentleman who has been engaged for some time past in perilous scouting duty in the Potomac Division of the Confederate Army, presented us yesterday with a splinter knocked from a tree by a Federal cannon ball, opposite Williamsport, Md.
The ball was fired from the Maryland
side, grazed the toll-house on the Virginia
side, and struck the tree about a mile distant from the river.
The same gentleman informs us that one of our pickets, (a member of Col. Stewart
's Cavalry,) was shot last Thursday, and supposed to be mortally wounded.
The ball struck him in the left hip, and passed through his stomach.
We did not learn his name.
The cannon ball above spoken of, and a shell that failed to explode, were subsequently found by our soldiers.
The Federalists, about 8,000 strong, were encamped at Williamsport
, under Gen. Cadwallader
, and were throwing up defences.