hardly human.

Before they had time to utter a word or move a muscle, the man threw up
his arms in a gesture indescribably terrible, and with a hoarse shout
disappeared in the swirling waters.

It all happened so quickly that for the space of a dazed second they
wondered if they had really seen it at all. Then they recovered their
powers of motion and rushed to the spot where the man had disappeared.

Though they leaned far out over the water they could see no sign of
anything human, and with a creeping feeling of horror they began to speak
of what had probably already happened.

"It's certain death down there," Roy muttered, as though to himself,
gazing into the rushing river. "The poor old fellow! He has got his, I
guess."

"Look here, fellows, here are some clothes," Will called out suddenly, and
the boys rushed over to where he stood, a tattered old hat and an equally
ragged coat in his hands. "Maybe there will be something in the jacket to
tell us where the poor fellow has been staying and what he has been up
to."

They searched through the coat and finally pulled out a wallet.

"Now if it only has some writing in it," said Mollie breathlessly.

There was a card, and the card bore the words which they expected, yet
dreaded, Arnold Dempsey, Ph. D. But there was nothing else, and suddenly