War of the Rebellion: Serial 001 Page 0165 Chapter I. CORRESPONDENCE, ETC.-UNION.

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riages from Castle Pinckney or Fort Moultrie] at the time I wrote to you this morning. Subsequently the rough opening of the embrasures was made and the revetment of the cheeks commenced.


The second bomb proof battery is built differently. The timbers on top are sloped at an angle of 45, about as in the sketch. They rest


upon two horizontal supports parallel to the direction of the battery, one higher than the other, and these are supported by stout posts, about 5 feet from each other. Upon the timbers are placed at right angles a stout planking, and upon this again another covering running up and down. This last consists of railroad iron, apparently the T rail. The work has only progressed thus far, although there is no doubt that the whole is to be covered with sand. The guns are mounted and the openings for embrasures formed.

The work is carried on quite rapidly, considering the heavy nature of the work. The idea of covering the bomb-proof with iron and giving it an inclination is no doubt derived from the Sardinian method for forming the sides of a man-of-war, so as to deflect the shot.

A large force of negroes is employed in extending the embankment of the parapet so as to connect this battery with the field work.

The guard-boats are very active at night, and some are always on the watch by day.

Inside this fort the work of preparation goes steadily on. My force is now employed in clearing the parade of the stone flagging. I am also having all the material on hand made into sand bags.

Very respectfully, your obedient servant,


Captain, Engineers.