"On guard!" he cried, madly. "The end is not yet! I'll kill you or you'll kill me!"

There was a clash of steel, and then the fight was on with more fury than before.

Diamond was utterly reckless. He left a dozen openings where Frank could have run him through. But Merriwell was working to repeat the trick of a few seconds before.

The frightened spectators were beginning to think of intervening, when once again Diamond was disarmed.

At the same moment there came a heavy knocking at the door.

One fellow, who had been on guard, ran in from a corridor and cried:

"It's the faculty! Somebody has given them wind of this!"

"Here! here!" called a freshman. "Follow me!"

They did so, and he led them to a back window, out of which they clambered.

Diamond was the last to get out, and just as he touched the ground somebody came around the corner and grabbed him.