June 26.—West H. Humphreys, convicted of having acted as a Judge under the rebel government, was impeached by the Senate of the United States, and sentenced to be removed from his office, and to be forever disqualified from holding any office of profit or honor under the government of the United States.
— The Union mortar-fleet on the Mississippi, under the command of Commodore Porter, commenced to shell the rebel batteries before Vicksburgh. The bombardment lasted for three hours without any result. ,
— The National forces under Majors-General Fremont, Banks, and McDowell were consolidated into one army, called the army of Virginia, and Major-General Pope was assigned by the President to the chief command. The forces under General Fremont constituted the First army corps, to be commanded by General Fremont. The forces under General Banks constituted the Second army corps, to be commanded by him. The forces under Gen. McDowell constituted the Third army corps, to be commanded by him.
—Lieutenant-colonel Alfred W. Ellet, commanding Union ram-flotilla on the Mississippi, went up the Yazoo River with two rams, for the purpose of capturing three rebel gunboats. On his approach the rebels set fire to their boats and started them down on him, compelling him to leave the river to escape the destruction of his vessels. The rebel vessels were entirely consumed.—Lieut.-Colonel Ellet’s Report.
— Nine vessels of the gunboat fleet, under command of Captain Rodgers, entered the Appomattox River, Va., and when about six miles from its mouth, were attacked by the rebels. The squadron opened fire in return, and after shelling him for an hour, the enemy retired. The object of the expedition was to discover the condition of the river, and was entirely successful.
It was ascertained that the rebels had blocked it up, about seven miles from its mouth, with sunken vessels laden with stone, etc. — New Haven Palladium.
— The rebel schooner Zaide, while attempting to run the blockade, was run ashore in the mouth of Cape Fear River, by the blockading fleet off Wilmington, N. C, and burned.
—The battle of Mechanicsville, Va., was fought this day. It commenced at noon and lasted until dark. The Unionists opened with artillery at long-range, but the rebels finding themselves weak in this arm, came into close conflict. The fight increased in fury as it progressed, and it finally became one of the most terrific combats of the war. After losing more than a thousand men, the rebels retreated.—(Doc. 78.)