Guns. Richmond 25 Water Witch 3 Union 4 SAILING CORVETTES. Vincennes 10 Preble 11 striking the Richmond a glancing blow. Chains were slipped at once, and the Richmond avoided a second blow by sheering. The ram passed back up the river. On the Confederate side the dash was a failure. On the Federal side the Vincennes was run ashore, deserted, and accident only saved the vessel, a train having been laid to her magazine and fired by Commander Handy. The train is said to have been put out by one of the crew before leaving, and the ship was hauled off after daylight. _Mississippi River, above Vicksburg, July 15, 1862._ At about 7 a.m. the Confederate ram Arkansas made a dash down the river through the Federal squadron lying at anchor. Guns. Hartford 28 Richmond 25 Oneida 10 Iroquois 7 Wissahickon 4 Winona 4 Sciota 4 As she passed through without attempting to ram, broadsides were exchanged. The Arkansas was disabled, but not caught. Federal loss: killed, 5; wounded, 16. _Charleston Blockading Fleet, February 2, 1863._ At about 4 a.m. a Confederate iron-clad ram made a dash from the harbor into the blockading squadron. Guns. Keystone State 13 Housatonic 13 Quaker City 9 Augusta 10 Mercedita 9 Memphis 7 Running at the Mercedita, she rammed her on the starboard beam, and at the same time put a shot through her boiler, completely disabling her. The ram then passed under her stern, demanded and received her surrender, but did not take possession, the crew being paroled. The Keystone State was then attacked, but avoided being rammed, although she received a shot through her boilers, completely disabling her. The ram then retired. Attack successful. Federal loss: killed, 24; wounded, 23; one crew paroled, two vessels disabled. Duration of attack, one hour. IRON-CLADS AGAINST WOODEN VESSELS. _Hampton Roads, March 8, 1862._ On the morning of March 8th the Confederate ram Merrimac entered Hampton Roads, where were lying at anchor the STEAM FRIGATES. Guns. Minnesota 50 Roanoke 50 SAILING FRIGATES. Congress 50 Cumberland 24 St. Lawrence 12