"But I am sure I heard some noise. What was it?"
"I'm afraid I snore rather loudly when I sleep," said Frank innocently, "and my brother is also addicted to that habit, are you not, Andy?" He gazed innocently at his brother.
"Yes, I am sorry to say that I am," spoke Andy.
"Ouch! My!" suddenly exclaimed the professor. The room was plunged in darkness again, for the match had burned the teacher's fingers and he had dropped it.
"Did you say anything, Professor?" asked Frank gently.
Andy had to stuff the end of the sheet in his mouth to prevent his laughter from being heard.
"I thought I heard you say something," went on Frank.
"Humph! Let there be no more of this levity!" snarled Mr. Callum. He turned and hastily left the room, not taking the trouble to light any more matches to investigate further. The brothers could hear him tramping down the corridor.
"Get up and shut the door, then light the gas again," said Frank. "But turn it low, Andy."
His brother obeyed. Then both began to pick up the pillows which were still scattered about the room. Fortunately in the flickering light of his match Professor Callum had not observed them, or the snores of Frank and his brother would not have availed them. As it was they had had a narrow escape.