was beneath him, he gave
another cry. "Ice! What does this mean? Can the water pipes have burst
and flooded the room?"

Not without difficulty he managed to regain his feet, and then started
to walk to where he could turn on the lights. But again he slipped, and
this time he came up against a small table piled high with books and
sent this over with a crash.

"Gee! he's sure enjoying himself!" chuckled Andy.

"Come on, fellows, let's see what all the noise is about!" exclaimed
Jack in a loud voice. "Something dreadful must be going on in Professor
Lemm's room."

"What's the matter--is somebody getting killed?" called out Randy.

"It isn't a fire, is it?" broke in Walt Baxter, catching the cue.

"Sounds to me as if somebody was pulling the school down," was Spouter's
contribution.

"Everybody to the rescue!" yelled Ned Lowe.

These cries, combined with the noise which was coming from Asa Lemm's
apartment, caused such a commotion that soon fully a score of other
cadets showed themselves in the hallway.

"What's the matter?" questioned Slugger Brown, who had just been on the
point of retiring, and who was in his pajamas and slippers.

"Something going on in Professor Lemm's room," answered Nappy Martell,
who had been with him, and who was similarly attired.

By this time Professor Lemm had managed to regain his feet a second
time, but the broken sheets of ice were now all over the floor of his
room, and just as he managed to turn on the lights he slipped once more,
this time sending a chair spinning against the closet door.

"It's ice--it's ice, and nothing else!" he ejaculated, as he gazed in
wonder at the floor. "Now, how did that come here? I don't see any
broken water pipe." Then, of a sudden, his face took on a dark look.
"It's those boys--confound them! If I can catch them, I'll make them
suffer for this!"

CHAPTER XI

THE JOKE ON ASA LEMM

"Let's go in and see what's the matter with the poor man," suggested
Andy.

"That's right--maybe he's got a fit."

"Something has happened to Professor Lemm!" yelled one of the other
cadets.

By this time the commotion had attracted the attention of nearly
everybody in the school, and teachers and cadets came running from all
directions, and even some of the hired help from the kitchen came up the
back stairs, wondering what had gone wrong. Then the bunch of boys, led
by the Rovers, suddenly threw open the door which led to Asa Lemm's
room. It was