Colonel Duffield, at Murfreesboro, Tenn., captured a mail direct from Corinth, Miss., with upward of one hundred and fifty letters, many containing valuable information regarding the strength and position of the rebels. From these letters Gen. Dumont learned that a number of spies were at Nashville and Edgefield, Tenn., and had them arrested.--National Intelligencer, April 10.
The National gunboat Carondelet under the command of Capt. Walke, having on board Gen. Granger, Col. Smith, of the Forty-third regiment of Ohio Volunteers, and Capt. Lewis H. Marshall, Aid to Gen. Pope, made a reconnoissance to Tiptonville, Mo., the object being to draw the fire from the masked batteries of the rebels along the Mississippi River. On her way up the river the Carondelet attacked a battery, and, Capt. Marshall, accompanied by a party of soldiers of the Twenty-seventh Illinois regiment, landed, spiked the guns, destroyed the carriages, and threw the ammunition into the river.--N. Y. Commercial, April 9.
Yesterday an expedition from General Mitchel's command, consisting of two companies of the Fourth Ohio cavalry, and a piece of artillery from Loomis's battery, in charge of Lieut. C. H. O'Riordan, the whole in command of Colonel Kennett, left Shelbyville, Tenn., marched to Decherd, and proceeding this morning to the University grounds, near where the main road sends off a branch toward some coal-mines, among the mountains, captured there a locomotive and a train of freight-cars. Thirty rebel soldiers were on the train at the time, waiting for the locomotive to get up steam. As soon as these fellows saw the Union troops, they took to their heels, scattering in all directions. A wild chase ensued, resulting in the overhauling and capture of fifteen of the fugitives. Ascertaining that a largely superior force of the enemy was stationed at the tunnel, nine miles below Decherd, the expedition returned to camp.--Cincinnati Gazette.
This day a party of rebel cavalry made a dash at the pickets of Gen. Wallace's division, in the neighborhood of Adamsville, Tenn. Lieut. Murray, of the Fifth Ohio cavalry, made a suitable disposition of the forces at his command, but the enemy outnumbered him three to one, and his pickets were compelled to fall back. Three of his men fell into the enemy's hands--Sergeant E. F. Cook, privates Wm. Ledwell and John Pilley, all of Co. I, Fifth Ohio cavalry. With regard to the fate of these men, the official report says: “When Sergt. Cook was last seen, he was riding among the rebels, fighting them hand t hand. It is not known if he was wounded befor being taken prisoner. Ledwell is supposed to be badly wounded or killed, as his saddle was covered with blood. Pilley is a prisoner, and supposed to be unharmed.”
Ship Point, Va., was captured by the forces of Gen. McClellan.