Atzerodt's whereabouts from the 12th to the 14th of April are not accounted for. On the 14th, after having taken his room at the Kirkwood, we next find him at a livery-stable on Eighth and E streets, where he procured a bay mare, paying five dollars for her hire for the afternoon. He took her to Naylor's stable and had her put up. Here he was accompanied by Herold. It was about one o'clock P.M. when he had his mare put up. He left and did not return until about seven P.M. On his return he ordered his mare to be saddled, and requested that she should be left standing with the saddle and bridle on until ten o'clock, when he would call for her. He returned at ten, got his mare, and left. He returned the mare to the stable on Eighth and E streets shortly after the assassination of the President, at about eleven o'clock. After returning the mare, he boarded a navy-yard car at Sixth Street, and rode down as far as the navy-yard. Finding a man by the name of Briscoe on the car, with whom he was acquainted, he asked him to let him sleep with him in his store. Being refused, he urged his request, and seemed excited. Briscoe asked him if he had heard the news. He replied that he had. Not getting permission to lodge with Briscoe, he said he would return to the Pennsylvania House, which he did, arriving there on horseback about twelve M. or one o'clock A.M. He asked the colored boy in waiting at the house to hold his horse whilst he went into the bar. He then mounted his horse and left, returning again at about two o'clock on foot, in company with another man. They paid for their lodging and retired. Atzerodt, on being requested by the clerk to register before retiring to his room, hesitated, and did it with manifest reluctance. These parties arose very early on the morning of the 15th, and left. At about eight o'clock on the morning of the 15th, we find Atzerodt in Georgetown trying to sell his watch to a man with whom he was somewhat acquainted; but not being able to do so, he pawned his pistol for ten dollars, saying he was going to the country and would come, or send, and redeem it the next week. He was followed and arrested in Montgomery County, Maryland, on the 20th of April. He ate his dinner on the 16th at the house of Mr Hezekiah Metz. There were two or three other persons at the table with him, and all were anxious to hear the news from Washington. He was asked whether it was true, as had been reported in that neighborhood, that General Grant had been killed. Atzerodt, according to the testimony of Metz, replied that "if the man who was to follow him had done so it was likely to be true." There was some conflict of statement, however, between Metz and the other two parties who were at the table, and who were used as witnesses for the defense. These thought he said if it were so, it was likely to have been done by some one who got on the train with him. There are good reasons, however, for concluding that Metz gave his real answer.