“And it tried to climb a tree with me! Bless my rubber boots, well do I remember that!”

It was owing to Mr. Damon’s disgust over the accident to his motorcycle that Tom had been able to secure it for a small sum. As related in the first volume of this series, “Tom Swift and His Motor Cycle,” the young inventor was started on his sensational career by the possession of this battered machine, which he repaired and got in running order. On it he had some exciting rides.

Tom was in his early manhood. He, and his aged and somewhat invalid father, an inventor of note, lived in the Swift homestead in the town of Shopton on Lake Carlopa. Tom’s mother was dead, but he and his father were well looked after by Mrs. Baggert, an efficient housekeeper. Of late years Barton Swift had not taken much active part in the rapidly growing business, though Tom always consulted his father on matters of importance.

It was at the suggestion of Mary Nestor, for whom Tom had a very great admiration, that the young inventor engaged his friend and boyhood chum, Ned Newton, to look after the business matters of the Swift Construction Company. Tom never had reason to regret that decision. For with Ned to look after money matters, see to contracts, and the like, Tom and his father were left free to exercise their inventive ability.

The Swift Company had gone into many lines of activity, from building airships and aeroplanes to constructing submarines and giant cannon for the government. These brought Tom and his associates money and fame, and also hard work.

Just prior to the opening of this story Tom had developed a new drill and a system of sinking shafts for oil wells, and when, as related in “Tom Swift and His Great Oil Gusher,” he successfully demonstrated how quickly he could get down to the oil-containing sand, he made another big amount of money, not only for the Swift Company, but for the Goby family as well.

It was after this that he began to think of getting together in one central place all his drawings, patent rights, secret formulae and the like. To this end he had had constructed the strong chest, and he and Ned had barely finished putting into it most of the valuable documents when the crash on the roof came.

“He doesn’t seem to be hurt, Tom,” remarked Garret Jackson, Tom’s shop manager, as he laid Mr. Damon on a pile of coats and jackets which some workmen hastily spread on the roof.

“Hurt! Bless my doctor’s bill, I’m not hurt at all!” exclaimed the odd man. “I’m shaken up, but I’m more worried about the plane than about myself. Is it all right, Tom? I tried to avoid the chimney, but I’m afraid one wheel grazed it.”

“Yes, that’s what happened,” replied the young inventor, as soon as he had made sure his friend was not hurt and had had time to inspect the craft. “You damaged it a little. But I can easily put on another wheel. I have some spare ones for that model.”