And the jewels did, for the stones proved to be of great value, even though the adventurers had saved only a few of the many they found in the ruined temple. But there was money enough so that they all could live in comfort the rest of their lives. As the professor was getting quite old, and incapable of making any more wonderful inventions, he closed up his workshop and settled down to a quiet life. As for Washington, Andy, and Bill and Tom, they invested their money received from the sale of the diamonds in different business ventures, and each one did well. “I am going in for a good education,” said Jack to Mark. “Just what I am going to do,” answered his chum. “And after we’ve got that——” He paused suggestively. “We’ll go in for inventing airships, or something like that, eh?” “Yes. We’ve learned a great deal from Mr. Henderson, and in the course of time we ought to be able to turn out something even more wonderful than the _Electric Monarch_, the _Porpoise_, or the _Flying Mermaid_.” “Yes, and when we’ve invented something better——” “We’ll take another trip.” “Right you are!” And then the two chums shook hands warmly; and here we will say good-bye. THE END. ------------------------------------------------------------------------ NEW ALGER BOOKS JOE, THE HOTEL BOY Or, Winning Out by Pluck By HORATIO ALGER, Jr. Illustrated, 12mo. Cloth, 60 cents [Illustration: small image of book cover] This is one of the last stories penned by that prince of all juvenile writers, Horatio Alger, Jr., and is one of his best. It describes the adventures of a youth brought up in the country by an old hermit. When the hermit dies the boy obtains work at a nearby hotel, and later on drifts to the city and obtains a position in another hotel. There is a mystery concerning the lad’s identity and likewise the disappearance of a certain blue box, but in the end all terminates satisfactorily. BEN LOGAN’S TRIUMPH Or, The Boys of Boxwood Academy By HORATIO ALGER, Jr. Illustrated, 12mo. Cloth, 60 cents [Illustration: small image of book cover] This story was penned by Mr. Alger some years before his death, but has never appeared in book form. Ben was a city newsboy, rather rough, but with a heart of gold. He did a great service for a good-hearted farmer, and the latter took Ben home with him. The lad had never been in the country before, and his eyes were opened to a new world. Then the youth was sent to a boarding school, where he made his way to the front amid many difficulties. Mr. Alger’s charm as a juvenile writer is so well known it is needless to mention it here, and this story is in his best vein. CUPPLES & LEON CO., Publishers, NEW YORK