Among others on the boat was the Young Man who Knows Everything, who has studied everything, and who has that rasping memory that enables him to retain everything he ever read, as well as every thought that ever passed through his mind, and the self-sufficiency that impels him to thrust his own talk at you, at no matter how inopportune a time, and no matter how inapplicable it may be to whatever is being discussed. He will discuss a question with you to-day, and when in his bed at night he will remember something that he should have said at the time, and break in upon you a week after with the omitted remark, with no preface, no explanation, taking it for granted that any discussion you ever had with him was of sufficient importance to take full possession of your mind and occupy it forever and forever. He had had an argument with the widower the night before at the hotel in Geneva, upon the authority of the Old Testament, which the widower, as was natural, forgot in an hour. Our widow and widower were sitting near the stern, in loving proximity, discussing quietly the loneliness of their situation. The young man was waiting very close, entirely oblivious of what they were saying, and only anxious to fire off his charge. "Ah, Mrs. Redding," said the widower, "when one has once tasted the sweets of congenial companionship--" In broke the young man: "It was the old dispensation, and is not binding on us to-day at all. Therefore you needn't do everything that Moses put upon the Jews; but, Mr. Thompson, you can just bet your sweet life that you are perfectly safe in not doing anything that he said the Jews should not do." The widower looked daggers, and the widow broadswords. As handsome a proposal as was ever to be made was nipped in the bud--an opportunity for the widow was lost which might never be regained. Who could tell? Possibly his passion might cool off. The fish was hooked but not landed, and this insufferable argument-monger was the cause of it. "Blast your Moses," uttered the irate widower. "Madam, if there is any part of this boat safe from the intrusion of young men who dabble in Moses, let us find it." And they went off, leaving the young man not at all abashed. He merely turned to an amused spectator, with the remark: "That man's face proves the correctness of the Darwinian theory. In time his descendants may become men. I was about to enlighten him on an important subject, but he would not." [Sidenote: THE IMPECUNIOUS TOURIST.]