Up came the professor, open flew his mouth, out spurted a stream of water, and then he wildly roared:
"Help! Save me! I can't swim! I'm drowning!"
Before either of the boys could say a word, he went under again.
"This is th' firrust toime Oi iver saw a man thot wanted to drown in thray fate av wather," said Barney.
Frank sat down on the dry ground, and shouted with laughter.
Up popped the professor a second time.
"Help!" he bellowed, after he had spurted another big stream of water from his mouth. "Will you see me perish before your very eyes? Save me, Frank!"
But Frank was laughing so heartily that he could not say a word, and the little man went down once more.
"Hivins! he really manes to drown!" said Barney, in disgust.
"Grab him!" gasped Frank. "Don't let him go down again. Oh, my! what a scrape! This beats our record!"