he forgot all about the incident till, as it happened that day month, the first of the month by the calendar, when he was sitting in his study with an eminent colleague to whom he was explaining his great scheme. "If you are able to carry it out," the colleague said slowly, "your book will mark an epoch in human thought. But the cost will be tremendous." "I estimate it at twenty thousand pounds," answered the Professor calmly. "I am fully prepared to spend twice as much. You know I have recently inherited forty thousand pounds from a relative?" The eminent colleague nodded and looked very impressed. "It is magnificent," he said warmly, "magnificent." He added: "You've cut yourself, do you know?" "Cut myself?" the Professor echoed, surprised. "Yes," answered the eminent colleague, "there is blood upon your hand--your right hand." In fact a spot of blood, slightly larger than that which had appeared before, showed plainly upon the Professor's right hand. He wiped it away with his handkerchief, and went on talking eagerly, for he was deeply interested. He did not think of the matter again till just as he was getting into bed, when he noticed a red stain upon his handkerchief. He frowned and examined his hand carefully. There was no sign of any wound or cut from which the blood could have come, and he frowned again. "Very odd!" he muttered. A calendar hanging on the wall reminded him that it was the first of the month. The days passed, the incident faded from his memory, and four weeks later he came down one morning to breakfast in an unusually good temper. There was a certain theory he had worked on the night before he meant to write to a friend about. It seemed to him his demonstration had been really brilliant, and then, also, he was already planning out with great success the details of the scheme for his great work. He was making an excellent breakfast, for his appetite was always good, and, needing some more cream, he rang the bell. The maid appeared, he showed her the empty jug, and as she took it she dropped it with a sudden cry, smashing it to pieces on the floor. Very pale, she stammered out:Beg pardon, sir, your hand--there is blood upon your hand." In fact, on the Professor's right hand there showed a drop of blood,