The Federal loss of Fort Jackson.
Morian, May. 18.
--The Register says it has been informed by navel officers that the steamer Pensacola, with five hundred persons on board, the steamer Tennessee, and two mortar boats, were sunk in the fight at Fort Jackson, below New Orleans.
The Federal loss was about one thousand killed. The Confederate loss is estimated at thirty-five killed and fifteen wound.
A large amount of powder and other property was saved from Forts Pike and Macomb.
The Vicksburg papers, of the 8th, treport that the Federal vessels from New Orleans are near Natches, and say they will have a warm reception at Vicksburg.
Atlanta, May 12.--The Government loss in the fire of Sunday is comparatively trifling, being only a few thousand pounds of bacon. 