Fitted into the clock, in such a way that they could be removed, were a series of long tubes with valve-like endings. The Doctor had removed one or two of these and examined them very closely, but he could not arrive at any idea of their purpose. At every point in his examination the Doctor had found himself confronted by an elaboration, in some cases a flat contradiction, of ordinary human functions. He could not grasp even the elementary premises of a state of affairs that had made the Clockwork man possible. II Shortly after midnight the Doctor's expectant ear caught the sound of someone alighting from a bicycle. A moment later footsteps clattered down the area stairs, and Gregg, still attired in his cricket flannels, appeared at the open door. The smile faded from his lips as he beheld the drawn, agitated features of the Doctor. "Hulloa," he exclaimed, "you look pretty bent." The Doctor shut the door carefully and lifted a warning finger. "Gregg, this thing must never be known. It must never go beyond ourselves." "Why not?" Gregg sat down on the couch and twisted his hat idly between his fingers. "Because," said the Doctor, trying hard to control the twitching of his features, "it's too terrible. What I have seen to-night is not fit for mortal eye to behold. It's inhuman. It's monstrous!" He sank into a chair and covered his face with his hands. The presence of another person brought a kind of relief to his pent up feelings. He let himself go. "Oh, God, it's the end of all things, Gregg. It's the end of all sane hopes for the human race. If it is true that in the future man _has_ come to this, then the whole of history is a farce and mockery. The universe is no more than a box of conjuring tricks, and man is simply a performing monkey. I tell you, Gregg, this discovery, if it is made known, will blast everything good in existence." "Stop a minute," exclaimed Gregg, arising in sheer astonishment, "you seem to be upset. I don't understand what you are raving about." The Doctor stabbed a finger wildly in the direction of the coal cellar. "If you had seen what I have seen to-night, you would understand. You would be feeling exactly as I am now." Gregg placed a hand soothingly upon his friend's shoulder. "Why didn't you send for me before? You're over-strung. This experience has been too much for you." "I grant you that," said the Doctor, hollowly, "I know only too well what effect this shock will have upon me. You are a younger man than I am, Gregg. I am glad you have been spared this sight." "But where is the Clockwork man?" demanded Gregg, presently. The Doctor's finger again indicated the coal cellar. "He--he's in there--I--I managed to stop him. He--he's in a kind of sleep."