We built big fires of brush wood, to give light and warmth, and deceive the enemy. It was cold, though in April; the men, as usual, light-hearted and cheerful round the fires, though an empire was passing away around them; some, with an innate consciousness of the work before them, when they heard that the halt was to be for two or three hours, wrapped in their overcoats, with the capes drawn over their heads, were soon sound asleep, forgetting the defeat of armies, the work of yesterday, the toil and danger of to-morrow, in some quiet dream of a home perhaps never seen again. Two o'clock came and passed; our men had not come in. The General waited until four o'clock. I think we were at this point six miles from Richmond. We should have been there at daylight, and we were to burn the bridge in time to prevent the enemy's crossing, as our whole train, with infantry and artillery, had crossed during the night. Our brigade of cavalry, and one company of artillery attached to it, were all that were on this side--the north bank of the river. We could wait no longer, and moved off slowly. In a short time after we started a tremendous explosion took place toward the river, lighting up everything like day, and waking every echo, and every Yankee for thirty miles around. It was evidently a gunboat on the river at "Drury's Bluff." Two others followed, but they did not equal the first. She was iron-clad--the "Virginia," as we afterwards heard--just completed. She burst like a bomb-shell, and told, in anything but a whisper, the desperate condition of things. There was no time to be lost; the Yankees had heard it as well as ourselves, and we moved on at once. We overtook, just at daylight, and passed a small squad of our dismounted men from the Seventh, who had got in from the picket line. When we reached the intermediate line of works, where the "Charles City" and "New Kent" roads come together, not far from the "turnpike gate," which all who travelled that road--and who of the army of Northern Virginia did not?--will remember, the sun was just rising, and an ugly red glare showed itself in the direction of Richmond that dimmed the early sunshine.