"I'll do what I please, and you can't stop me!" "I want you to leave me alone," reiterated the old professor.
"I will--when I am done with you.

How do you like that, old man ?" And then Nat Poole gave a brutal laugh.
"Oh! oh! Don't smother me!" spluttered Caspar Potts.

"Please leave me alone! You have ruined my clothes!" "I wonder what's up ?" said Dave to his chums, and ran through the barn to the rear.

There he beheld Caspar Potts in a corner.

In front of him stood Nat Poole, holding a big garden syringe in his hands.