20th.—A friend from the Valley has described a successful attack made by Mosby on a Federal wagon-train near Berryville. It was on its way to the army near Strasburg, and Mosby was on the other side of the Shenandoah. He crossed in the night with one cannon and about seventy-five men, and at daylight surprised the drivers and guard as they were beginning to hitch their mules, by a salute from the cannon and seventy-five pistols. There was a general stampede in an instant of all who were unhurt. As quick as thought, 600 mules were turned towards the river, and driven to the command in Loudoun. In the mean time, the wagons were set on fire, and most of them and their contents were consumed before the luckless drivers could return to their charge.
It is said that our new steamer, the “Tallahassee,” has been within sixty miles of the city of New York, very much to the terror of the citizens. It also destroyed six large vessels. I bid it God-speed with all my heart; I want the North to feel the war to its core, and then it will end, and not before.