... established on the ground thus won, and before dawn on the 27th, under cover of the flying sap, the trenches were pushed about one hundred yards nearer to the fort. Notwithstanding this success, General Gillmore , in his report, speaks of this period as the dark and gloomy days of the siege, and of the progress made as discouragingly slow, and even painfully uncertain. The ground between his front and Wag...