A Diary of American Events.

May 19.—The rebel schooner Mississippi, from Mobile, Ala., to Havana, with a cargo of cotton and turpentine, was captured by the gunboat De Soto.—The National cavalry, under General Milroy, had a skirmish with the rebels, at a point six miles from Winchester, Va., in which they killed six and captured seven prisoners.—Richmond, Clay County, Mo., was captured, together with the National force occupying it, by a band of rebel guerrillas, after a severe fight, in which two officers of the Twenty-fifth Missouri regiment were killed. A lieutenant belonging to the captured party was shot after the surrender.—The Spanish steamer Union, was captured by the National gunboat Nashville.