BALTIMORE, Thursday, Feb. 19.

This afternoon, while Gen. BUTLER, in company with the Committee of Reception and Gen. SCHENCK and Staff, were visiting the forts around the city, a most melancholy accident took place, which cast quite a gloom over the party.

They had visited Forts McHenry and Federal Hill, and had gone thence to Fort Marshall, at the eastern extremity of the city. Here a salute was fired. Just as the General and his party had passed along the ramparts, out of range of the gun, the gunner, supposing that the whole party had passed, fired a thirty-two pounder. But most unfortunately, just as the gun was discharged, some of the party, who had loitered behind, came up, and one of them, Commander MAXWELL WOODHULL, U.S.N., received the whole charge, which blew the flesh from his lower limbs and caused his death in a few moments. His body was blown ever the ramparts to the distance of thirty feet.

The unfortunate officer was about fifty years of age. He has a son on Gen. SCHENCK's Staff.

In consequence of this sad accident, the dinner, which was to have taken place at the Eutaw House, was postponed, out of respect to the deceased and Gen. SCHENCK, who was his cousin.

Maxwell Woodhull