d to their
rooms, these cadets came forth into the halls on tiptoes and made their
way noiselessly in the direction of the apartment occupied by Asa Lemm.

"He's arranging that clothing in his closet," announced Andy, after
peering through the keyhole in the door. "He's partly undressed, so I
guess he'll go to bed pretty soon."

There was a short silence, and then the boys heard the bed creak as
Professor Lemm got into it. An instant later came a cry of rage.

"What's this? More ice, I declare! The bed is sopping wet! Oh, those
young rascals!" for Asa Lemm had thrown himself down beneath the spread
under which had been placed several sheets of thin ice. A large portion
of the ice had melted, and the sheets were as wet as they were cold. As
a consequence, his pajamas were pretty well soaked, and he shivered as
he threw the covers back and bounced to his feet.

"He's enjoying it all right enough," whispered Andy.

"Hang those boys!" roared the irate teacher. "Oh, what I wouldn't do to
them if I had them here!" He hopped around the room first on one foot
and then on the other, shivering as he did so. As was usual, the steam
throughout the building had been turned off some time before, so that
the apartment was quite cold.

"We had better scatter," warned Jack. "He may open the door at any
instant and find us here."

"Right you are!" answered Randy, and then, unable to resist the
temptation, he bent down and shouted through the keyhole: "Pleasant
dreams, Professor! I hope you enjoyed the ice-water!"

Then all of the cadets fled to their rooms, and in less than five
minutes each of them was undressed and safe in bed.

If ever there was an angry man, it was Asa Lemm at that particular
moment. He had to change all his night clothing, and then don a bathrobe
and slippers and go down below once more and get some of the hired help
to clean up his room and take away the wet mattress of his bed. A dry
mattress was substituted from a vacant bedroom, but it was all of half
an hour before this work was accomplished; and in the meantime the
professor stormed around, threatening about everything he could imagine.

"I'll have the law on them! I'll have every one of them locked up!" he
said to Colonel Colby. "It's an outrage that I should be treated in this
fashion."

"It is certainly a most unpleasant occurrence, Professor," agreed the
master of the Hall. "But boys will be boys--you know that as well as I
do. I can remember