somewhere back in my mind, but he will not come forward." John Pride regarded his listener for a moment and then went on. "The man seemed in ample funds and paid for the property with a giant ruby the like of which my great grandfather had never before set eyes on. "But the affair was far from ended. The man moved his ménage into the mansion saying he would call upon my great grandfather later. "All the legal formalities had been of course taken care of--an indisputable deed, guaranteed by the strongest trust company in the land. But that was not enough. "After a few weeks, during which time the man had inquired of my great grandfather where certain materials could be obtained, he returned to the old gentleman's office with the most startling request of all. "He said that he had set in motion a procedure that would terminate in exactly one hundred years from a given moment and that he wished to retain grandfather's firm as trust agents in relation to that procedure. The duties of the firm would be negligible during the hundred-year period. My great grandfather and his issue were merely to remain completely away from the property which was certainly a simple thing to do. "But knowledge of what had taken place must be passed down to his son and in case the latter did not survive the one hundred years, to his son's son. "At this point my great grandfather interposed reality in the form of a question: 'I have a son but suppose he is so inconsiderate as to not duplicate with a male heir?' "The man smiled and said he was sure that would not be the case. He was right, but whether it was a gamble on his part or whether he spoke from a knowledge beyond us, we never knew. "But regardless--at the end of one hundred years the surviving issue was, by sacred trust, to be present in this mansion. The door of a vault beneath it would open and the trustee was to enter and deliver therein a written account of the series of events leading up to that moment."In payment for this service, the man insisted upon presenting my great grandfather with jewels the value of which on a yearly basis transcended all our other income combined. My great grandfather demurred but the man said nothing brightens memory so much as material gain and he did not want the agreement to be forgotten." "What happened to the man?" the young listener asked. John Pride shook his head sadly. "We never knew. When all the arrangements were made, he came again to the office, thanked my great sire for his services, and was never seen again." "He must have given you his name." John Pride frowned. "He used a name of