70 Southern Historical Society Papers.
an ample bomb-proof made by cutting a deep ditch from the salient to the bastion line. This ditch was crossed at right angles by an- other of similar dimensions, commencing and terminating at the flank angles respectively. These ditches were then roofed with timber and covered with the earth removed in making the excavations. Thus was constructed not only a commodious bomb-proof but also an excellent magazine. Semi-lunar in outline, the enclosed lunette constituted its centre, with a redan on the left and a semi circular work on the right. The infantry line and curtains connecting these were substantial in character and showed a double front. The inte- rior front commanded the terre-plein in case the enemy should attack from Hutchinson's island. Sand-bags were used instead of head-logs, and they were so arranged as to permit the garrison, while firing, to be entirely under cover. The exterior front was protected by a double frieze of stakes and fence-rails planted firmly in the ground and interlaced with iron wire. Such was Fort Hardeman, planned by and constructed under the supervision of Lieutenant-Colonel B. W. Frobel of the engineers. The labor was performed by the Georgia militia and a detail of negroes. On the 9th and loth of December the enemy attempted to carry this work, but the assaults in each instance were feeble and were easily repulsed.
The right of the Confederate line developed into a well traversed field work, mounting three 32-pounder guns, resting upon the Savan- nah river and designed to cover Williamson's river dam and its approaches. The preservation of this dam was essential to the reten - tion of the water by means of which the overflow, to which we have alluded, was in a considerable degree accomplished. Between this battery and the Augusta road several pieces of artillery were postea in lunettes.
At the crossing of the Augusta road a substantial earth work was constructed, mounting three heavy guns, with field pieces on the flanks.
Battery McBeth, located at the intersection of the Louisville turn- pike and the Central railroad with the Confederate line, was armed with three 32-pounder guns on barbette carriages and two 24-pounder Blakely rifle guns on siege carriages.
In supporting distance, and about half way between the Louisville road and the Savannah and Ogeechee canal, were posted a 12-pounder Napoleon gun and a 6-pounder bronze field piece. Along the right bank of the canal, and in confirmation of the line running through the woods between the canal and the high ground on Daly's farm,