"Ha! More skylarking!" the instructor exclaimed. "What does this mean, Ranger?"
"I sprained my ankle," replied our hero.
"What are you doing out at this hour? And what are the others doing?"
"We had permission to go to the village," replied Jack, truthfully enough, for Dr. Mead had allowed the boys to go; though the object of the trip, of course, had not been disclosed to the master.
"Go to your rooms," commanded Professor Grimm. "I will look into this."
"I wish he hadn't seen us," said Jack, when his two chums had taken him to his dormitory.
"Why?" asked Sam. "Where's the harm?"
"I have a sort of queer feeling that something is going to happen," Jack replied. "I want to finish out the term with a good record, for my aunts' sakes. If there are any pranks played tonight, Grimm will be sure to suspect me."
"Don't cross a bridge until it trips you up," said Sam. "Now, let's have a look at that ankle."
They found it was not as bad as Jack had feared.