Mr. Lincoln visited our camp on the 1st of October, and remained two or three days. I was with the party of officers invited by McClellan to accompany the President in a ride over the route which Sumner had followed in the battle. We crossed the Antietam in front of Keedysville, followed the hollows and byways to the East Wood, and passed through this and the cornfields which had been the scene of Hooker's and Mansfield's fierce fighting. We visited the Dunker Church and then returned to camp by Bloody Lane and the central stone bridge. The President was observant and keenly interested in the field of battle, but made no display of sentiment. On another day he reviewed the troops which were most accessible from headquarters. As my own corps was among the first on the list, I did not join the escort of the President at the general's quarters, but was with the troops attending to the details of the parade. We were ordered to be under arms at eight o'clock, but it was more than two hours after that when the reviewing cortege came on the ground. The officers were very hilarious over some grotesque story with which Mr. Lincoln had seasoned the conversation, and which seemed to have caused some forgetfulness of the appointment with the troops. We were reviewed by divisions, and I met the party with my staff, riding down the lines with them, and answering the inquiries of the President and the general as to the history and the experience of the different organizations as we passed them. The usual march in review was omitted for lack of time, the President contenting himself with riding along the lines formed in parade. I had missed seeing the President in Washington when I paid my respects at the White House, and this was my first meeting with him after his inauguration. His unpretending cordiality was what first impressed one, but you soon saw with what sharp intelligence and keen humor he dealt with every subject which came up. He referred very pleasantly to his knowledge of me through Secretary Chase, showing the kindly instinct to find some compliment or evidence of recognition for all who approached him.