The British steamer Ann was cut out from under the guns of Fort Morgan, at the mouth of Mobile Bay, by the United States steamer Kanawha. She ran in during the night, passed the blockading fleet, and as it was very dark, she could not be seen by the vessels. Lights had been kept burning on the fort all night, so that she had no trouble in finding the channel. This morning she was discovered by the Susquehanna, within a half-mile of the fort, unloading her cargo into a rebel steamer alongside. The Susquehanna, accompanied by the Kanawha, then got under weigh, and steamed within gunshot and opened fire, which was returned by the fort, and kept up for an hour on both sides. In the mean time the crew deserted the steamer. She was soon discovered to be adrift, and dropped down with the current about a mile, when the Kanawha was ordered to go in and bring her out, which she did under a heavy fire from the fort.
The battles of Peach Orchard and Savage's Station, Va., were fought this day.--(Doc. 78 and Supplement.)
A fight took place at Henderson, Ky., between a company of the Louisville Provost-Guard, supported by a detachment of Captain Andrew's Michigan battery, and a force of rebel guerrillas, which resulted in the complete rout of the latter.
Moorefield, Va., was this day captured by a body of Ashby's cavalry, eighty-six in number, under the command of Colonel Harris. A large company of the Maryland Home Guard occupied the place at the time, but they made no defence, having been informed that the rebel force was four thousand strong. They were taken prisoners, and were released next day.
General Halleck, at Corinth, Miss., issued an order authorizing the protection of the mail service in his department.--The bombardment of Vicksburgh was continued to-day. The firing commenced at noon, and, with the exception of  an intermission of an hour, did not cease until about twelve o'clock at night.