Sherman at Atlanta.In Hood's hasty evacuation of Atlanta many of his guns were left behind. These 12-pounder Napoleon bronze field-pieces have been gathered by the Federals from the abandoned fortifications, which had been equipped entirely with field artillery, such as these. It was an extremely useful capture for Sherman's army, whose supply of artillery had been somewhat limited during the siege, and still further reduced by the necessity to fortify Atlanta. On the march to the sea Sherman took with him only sixty-five field-pieces. The Negro refugees in the lower picture recall an embarrassment of the march to the sea. “Negroes of all sizes” flocked in the army's path and stayed there, a picturesque procession, holding tightly to the skirts of the army which they believed had comeforthe sole purpose of setting them free. The cavalcade of Negroes soon became so numerous that Sherman became anxious for his army's sustenance, and finding an old gray-haired black at Covington, Sherman explained to him carefully that if the Negroes continued to swarm after the army it would fail in its purpose and they would not get their freedom. Sherman believed that the old man spread this news to the slaves along the line of march, and in part saved the army from being overwhelmed by the contrabands.