Norra Carorina Troops, 1861-65. FORT HELL AND MORTAR BED. Strong forts for heavy ordnance and at points most threat- ened, especially the salients and on the cavalier lines, are constructed and mounted. Of course this was not the work of a day, nor a week, nor a month, but goes on steadily, one third of the command under arms, the others working by de- tails. Where the distance between the lines will permit, a picket line is established and protected by rifle pits. This is manned each night to prevent a surprise, and the skirmish- ers withdrawn therefrom at daylight. Near the salient occu- pied by the portion of Pegram’s Virginia Battery, on which the centre of the Fifty-sixth Regiment rested in the battle of 18 June, the enemy have gradually dug in towards our line until they are in speaking distance. Here at the slightest commotion, taken as a demonstration on either side, an in- cessant musketry fire is begun and continued through the night. The point is called “Fort Hell.” The field where our line crosses the Norfolk Railroad is called “The Mortar Bed,” for a similar reason. These mis- siles are rained upon Colquitt’s salient facing Fort Stedman at the crest of the hill, here nearest the railway, and upon the cavalier line immediately behind it. But the daily returns have almost ceased to show casualties from the. mortars. There is no difficulty in catching a sight of these shells against a white cloud in the air after the report of the gun, and before they have reached the altitude from which they are to descend; but with a clear sky, the first warning of its vicinity may be the puzzling hiss of the fuse in its descent. 27 June. Wm. Cole died of wounds received in the bat- tle of the 18th instant. He was an exemplary citizen and a good soldier. 4 July, James R. Miller is wounded on the skirmish line guard duty. 22 July. Wm. J. Tinnin is mortally wounded, and dies on the 23d. He had served faithfully as First Sergeant, and in the difficult position of Commissary Sergeant. On this date Thomas C. Scarlett was severely wounded. SAPPING AND MINING. The Army of Northern Virginia, to which Beauregard’s