"This is the first time I have seen the doctor and Mr. Dale out," said Dave. "They row very well, don't they?"
"The doctor was once a college oarsman," put in Plum. "I suppose he likes to get out here for the sake of old times."
"Well, Mr. Dale pulls as well as he does," returned Dave. "Both of them pull a perfect stroke."
"Wonder if old Haskers ever rows?" mused Phil.
"Guess he doesn't do much of anything but teach and find fault," grumbled Gus Plum.
The craft containing the doctor and the first assistant was heading for the east shore of the river and was soon out of sight around a point of rocks. The other boat had turned around, so the boys did not have a chance to speak to their fellow-students.
"Here comes a motor boat!" cried Dave, as a steady put-put! reached his ears.
"It's Nat Poole's boat," said Phil as the craft came into view.
Soon the motor boat came close to them and they saw that Poole and Merwell were on board. The pair were smoking, as usual, but placed their cigarettes on the seats, out of sight.
"Where are you going?" demanded Nat Poole, abruptly.