Littlefield, it will be remembered, had seen Dr. Parkman on the Monday before his disappearance, when he visited Webster at the College, and been present at the interview, in the course of which the Doctor told Webster that "something must be done." That Monday morning Webster asked Littlefield a number of questions about the dissecting-room vault, which was situated just outside the door of the lower laboratory. He asked how it was built, whether a light could be put into it, and how it was reached for the purpose of repair. On the following Thursday, the day before Parkman's disappearance, the Professor told Littlefield to get him a pint of blood from the Massachusetts Hospital; he said that he wanted it for an experiment. On the morning of Friday, the day of Parkman's disappearance, Littlefield informed the Professor that he had been unsuccessful in his efforts to get the blood, as they had not been bleeding anyone lately at the hospital. The same morning Littlefield found to his surprise a sledge-hammer behind the door of the Professor's back room; he presumed that it had been left there by masons, and took it down to the lower laboratory. This sledge-hammer Littlefield never saw again. About a quarter to two that afternoon Littlefield, standing at the front door, after his dinner, saw Dr. Parkman coming towards the College. At two o'clock Littlefield went up to Dr. Oliver Wendell Holmes' room, immediately above Professor Webster's, to help the Doctor to clear his table after his lecture, which was the last delivered that day. About a quarter of an hour later he let Dr. Holmes out, locked the front door and began to clear out the stoves in the other lecture-rooms. When he reached Webster's he was surprised to find that both doors, that of the lecture room and that of the lower laboratory, were either locked or bolted. He could hear nothing but the running of water in one of the sinks. About half-past five Littlefield saw the Professor coming down the back stairs with a lighted candle in his hand. Webster blew out the candle and left the building. Late that night Littlefield again tried the Professor's doors; they were still fastened. The janitor was surprised at this, as he had never known such a thing to happen before.