"Indeed it was," said George Strong.
"Are you sure this one is from the case in the laboratory, Captain Putnam?" questioned Andrew Garmore, one of the teachers.
"Yes, I know it well. Besides, here is the label on it."
"Well, I looked at the case early this morning and it was filled as it has always been."
"It's a trick on me!" roared Tad Sobber, angrily. "Just wait, I'll get square with somebody for this!" And he looked sharply at the Rovers.
"Sobber must like snakes—I saw him at the museum in Cedarville one day," answered Dick, and eyed the bully boldly. At this Sobber grew red in the face and slunk out of sight.
"Get to bed, all of you," said Captain Putnam sharply. "I'll investigate this in the morning."
As on the night before, it took the school a long time to quiet down. The Rover boys and their chums had a hearty laugh over the success of the trick.
"My! but Sobber is mad," said Fred. "You want to watch out, he'll do almost anything to get square."
The promised investigation the next day did not materialize, for the reason that Captain Putnam was called away on important business. Thus two days passed, and the snake incident was again practically forgotten by the majority of the students.