That same night Tom, and several bold spirits, with pillow cases, or white cloths over their coats, slipped from the dormitory where the Freshmen lived, moved and had their being. Tom carried his warning.

It was in Latin, more or less accurate, and in plain terms demanded on the part of Professor Skeel a more tolerant attitude toward the Freshman class, or, failure would be met with a burning in effigy of the disliked instructor. And the boys meant it, too.

“All ready now?” asked Tom as he and his chums, in the dark shadows of a thick hedge around Mr. Skeel’s house had adjusted their head-coverings. “All ready?”

“Lead on!” whispered Jack. “Who’s going to knock at the door?”

“I will,” agreed Tom. “We’ll go around to his ‘study,’ as he calls it. It’s got a door opening directly into the garden, and he’ll answer the knock himself.”

Advancing from amid group of his chums a little later, with the warning held in the cleft end of a long stick, Tom knocked on Mr. Skeel’s door. The professor was in his study, poring over some book, and laying new traps, in the way of difficult questions, for his pupils.

“Who’s there?” he cried sharply, at the sound of Tom’s rap.

A groan was the answer.