“That will do!” cried the professor so sharply that Jack was startled. “Go to your room at once. I will deal with you later. I never inflict any punishment when I am angry, and you have very nearly made me so. I will attend to your case later. Go to your room at once!”

There was no choice but to obey. Slowly Jack left the library, and mounted the stairs to his own apartment. His heart was bitter, and he was not a little worried concerning his father and mother, for, since Mr. and Mrs. Sylvester Allen had reached China, on their trip around the world, news had been received that there had been serious uprisings against the “foreign devils” as the Mongolians call people not of their race.

Jack Allen, who was a bright, sturdy youth, of about sixteen years, lived in the town of Westville, in one of our Eastern States. He was an only child, and his parents were well off.

Mr. Allen was very fond of travel, and so was his wife, but they had had little chance to gratify their tastes. A short time before this story opens Mr. Allen’s firm had some business to transact abroad, in several countries. Mr. Allen was offered the chance to go, and, as it was a long-awaited opportunity he decided to take his wife, and, while they were about it, make a tour of the world.

Jack begged hard to be allowed to go, but, as it would have broken up his schooling, and as his father wanted him to become an electrical engineer, he was, much against his will, left at home.

Jack attended the Westville Academy, and was one of the best students in that institution. When his parents decided to make their long trip, they discussed several plans of having their son taken care of while they were away. Finally they decided to send him to live with a former college instructor, Professor Klopper, who was an eminent authority on many subjects.

The professor was a bachelor, and, with an elderly sister, lived in a somewhat gloomy house on the outskirts of Westville.

There Jack had been for about a year, attending school in the meanwhile.

He had never liked Professor Klopper, for the aged man was crabbed and dictatorial, and very stern when it came to lessons. He made Jack study more than any other boy who went to the academy, and was continually examining him at home, on what he had learned in school. This, undoubtedly, was good for Jack’s scholarship, but the boy did not like it.

Mr. Allen had arranged that the professor should have complete charge of Jack, and a goodly sum had been left with the scientist for the keep of the boy.