Joe inherited from his mother an ability to ride almost any kind of horse, and he had nerves that made him unafraid to do circus tricks at great heights. As a boy he had climbed the village church steeple, to the delight of his companions and the horror of his foster-parents.

One day "Professor Rosello" gave an exhibition of magic in Bedford, and new events in Joe's life dated from then. The young man saved the professor's life, and then, because of threatened punishment on the part of Deacon Blackford, Joe ran away from home, eventually joining Professor Rosello, who made him an assistant.

Joe Strong was then started on his career to become a magician, and he "made good," as they say in theatrical circles. He invented some startling tricks and was a great help to the professor. At one time Joe's foster-father made a serious charge against him, and our hero was on the verge of arrest.

The second volume of the series is called: "Joe Strong On the Trapeze; Or, The Daring Feats of a Young Circus Performer." In that book Joe is first met helping Professor Rosello do a "fire trick" on the stage. Something went wrong with the electrical current and the magician was in danger of being burned to death. Joe's quick work saved Professor Rosello, but the shock was so great that the magician had to give up his stage work. The professor offered to lease the show to Joe, but the young performer had received a very good offer from the Sampson Brothers' Circus to become a trapeze performer, and he accepted.

Joe had formed the acquaintance of a few of the circus folk some time before in a casual way, and he had shown what he could do on the flying rings and the trapeze, which resulted in his engagement.

Jim Tracy, the ring-master, took quite a fancy to Joe, and Benny Turton, who did the "human fish" act, was very fond of our hero. As for Joe, he was more than interested in Helen Morton. So much so, that when it came to a question of whether or not to stay with the circus Joe decided to remain, just because he thought he might be of service to the girl rider.

He had been of great assistance to her in helping recover money left to her by her grandfather, and which a rascally law clerk nearly secured for himself. Bill Watson, the veteran clown, was also much interested in Helen and her inheritance, and he mentioned, casually, that perhaps Joe might come into money. For Mrs. Strong, who, before her marriage, was Janet Willoughby, came of a wealthy English family that had cast her off when she married Professor Morretti. But though Joe had written to England he had, as yet, received no encouraging word as to any inheritance that might come to him through his mother.

Joe is now beginning his second season with the Sampson Brothers' Circus, and the opening performance was marked by the accident which happened to Benny Turton.

"Quick now, boys!" urged the ring-master, as he walked along with the clowns who were carrying the half-unconscious form of the water performer. "I don't believe the crowd knows anything about it."

And this seemed to be the case. There were so many other things going on in the circus, so much to attract the attention, that it is doubtful if any in the throng realized that anything out of the ordinary had taken place in the big, glass tank. They may have supposed that every time, after his dive, the "human fish" was carried out that way to get ready for his next act.