Southern Historical Society Papers, Volume 29.
Reverend J. William Jones, Ed.

Fort Pulaski was sixteen miles from the city of Savannah, at the mouth of the Savannah river. General Mullineaux was in command. This fort was divided into casemates, each twenty-four feet square. In one corner of each casemate was a slat trap-door, leading down into a basement below, which was about six feet deep. There was a basement under each casemate, and every basement was the size of the casemate above. These were divided by solid brick walls laid in cement, and the walls were twenty-two inches thick.

On one side of the fort there was a moat seventy-five feet wide, the opposite side being of brick laid in cement. The bottom was also laid in brick and cemented, and thus held the water.

Some five or six feet from the bottom of the moat there were bricks left out at intervals in the wall of the fort, so as to let the water into the basements. When the moat would fill up to these openings, the water would pass into the basements below the casemates. It generally stood to the depth of four or five feet in the basements.