reduced towards the end of the investment to thirty-five, were made very effective in preparing for a vigorous defense.

The armament of the fort was mounted and supplied with maneuvering implements; machicoulis galleries, splinter-proof shelters, and traverses were constructed; the openings left for the embrasures of the second tier were filled with brick and stone and earth, and those in the gorge with stone and iron and lead concrete; mines were established in the wharf and along the gorge; the parade was cleared, and communications opened to all parts of the fort and through the quarters.

The fort was bombarded on the 12th and 13th of April by the rebels, and evacuated by Major Anderson's command on the 14th of April. During the bombardment, the officers' quarters were set on fire by hot shot from the rebel batteries, and they, with the roofs of the barracks, were entirely consumed. The magazines were uninjured by the fire. The bombardment dismounted one gun, disabled two others, and ruined the stair towers and the masonry walls projecting above the parapet. No breach was effected in the walls, and the greatest penetration made by successive shots was twenty-two inches. Nearly all the material that had been obtained to construct the embrasures of the second tier, to flag this tier and the remainder of the first tier, and to finish the barracks, was used up in the preparations for defense.

Fort Moultrie, Charleston Harbor, South Carolina.-The work of preparing this fort for a vigorous defense commenced in August, 1860, and was diligently prosecuted up the day of its evacuation, December 26, 1860. In this time the large accumulation of sand, which overtopped the scarp wall on the sea front, was removed to the front and formed into a glaciis; a wet ditch, fifteen feet wide, dug around the fort; two flanking caponieres of brick built, to flank with their fire the three water fronts; a bastioned for musketry constructed at the northwest angle; a picket fence built around the fort, bordering the ditch, and protected by a small glacis; merlons constructed on the whole of the east front; communication opened through the quarters, a bridge built, connecting them with the guard-house, and the latter looppholed for musketry, so as to serve for a citadel.

Means were also furnished to transport Major Anderson's command, and such public property as could be removed before the occupation of Fort Moultrie by the rebels, to Fort Sumter. Before evacuating the fort, the guns were spiked, the gun carriages on the front looking towards Fort Sumter burned, and the flagstaff cut down. A considerable quantity of Engineer implements and materials were unavoidably left in the fort.

Respectfully submitted.

J. G. FOSTER,

Captain, Engineers.

Numbers 3. Reports of and correspondence with Ordnance Storekeeper F. C. Humphreys, U. S. Army, in reference to seizure of Charleston Arsenal.

CHARLESTON, December 28, 1860.

Captain WM. MAYNADIER,

Ordnance Bureau:

A body of South Carolina military now surround the arsenal, outside, however, of the inclosure, but denying ingress or egress without