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Skipper's Gymnasium. And in August he admitted to Marcia that it made him capable of more mental work during the day.

"Mens sana in corpore sano," he said.

"Don't believe in it," replied Marcia. "I tried one of those patent medicines once and they're all bunk. You stick to gymnastics."

One night in early September while he was going through one of his contortions on the rings in the nearly deserted room he was addressed by a meditative fat man whom he had noticed watching him for several nights.

"Say, lad, do that stunt you were doin' last night."

Horace grinned at him from his perch.

"I invented it," he said. "I got the idea from the fourth proposition of Euclid."

"What circus he with?"

"He's dead."

"Well, he must of broke his neck doin' that stunt. I set here last night thinkin' sure you was goin' to break yours."

"Like this!" said Horace, and swinging onto the trapeze he did his stunt.

"Don't it kill your neck an' shoulder muscles?"

"It did at first, but inside of a week I wrote the quod erat demonstrandum on it."

"Hm!"

Horace swung idly on the trapeze.

"Ever think of takin' it up professionally?" asked the fat man.