...g this difficult and dangerous operation, and, on the 27th, he was back in his original camps opposite Vicksburg. Meanwhile, Ross had withdrawn from before Fort Pemberton, and on his way back met Quimby , on the 22d of March, near the head of the Yazoo pass. Quimby being senior, decided to return, and ascertain for himself the situation, but soon discovered that nothing could be done to remedy it; ...