"There he goes!" fairly screamed the Professor.
Chunky slipped over the brink and disappeared with a terrified "Wow!"
"They're both down there, now," groaned the Professor, leaning against the tree and wiping the perspiration from his brow.
CHAPTER V
RESCUED BY A HUMAN CHAIN
Too much stupefied to speak, even to move, the other two boys stood pale and trembling. There was no doubt in their minds that both Tad and Stacy had been killed.
"Do something! Do something!" shouted the Professor, recovering his voice in a sudden rush of words.
"I—I am afraid there is nothing we can do now," stammered Walter.
But Ned Rector had bounded to the edge and was gazing over half fearfully.
"There's Chunky! There he is!" he shouted.