...Sixteenth, Major-General Hurlbut, then at or near Memphis; and the Seventeenth, Major-General McPherson, also at and back of Memphis. General Grant when at Napoleon, on the 18th of January, ordered McClernand with his own and my corps to return to Vicksburg, to disembark on the west bank, and to resume work on a canal across the peninsula, which had been begun by General Thomas Williams the summer before,...