Stacy hung on grimly, perhaps not realizing the danger he was in. At
any rate, he was determined to save Tad if he could.

"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.