"Gib it to him!" This increased John's exasperation.

By this time he was almost foaming at the mouth.
"I'll kill you, Frank Frost," he exclaimed, this time rushing at him without a stick.
Frank had been in the habit of wrestling for sport with the boys of his own size.

In this way he had acquired a certain amount of dexterity in "tripping up." John, on the contrary, was unpractised.

His quick temper was so easily roused that other boys had declined engaging in friendly contests with him, knowing that in most cases they would degenerate into a fight.
John rushed forward, and attempted to throw Frank by the strength of his arms alone.

Frank eluded his grasp, and, getting one of his legs around John's, with a quick movement tripped him up.