was a
situation hinted at by the Professor. They had a duty to perform, if
such should turn out to be the case. With many misgivings they decided
that they must follow up the stream, cost what it might. No provision
had been made for a lengthy trip, but, fortunately, they had plenty of
ammunition, and as to food, they could supplement what they had by
forage along the way, as they had often done before.

"What shall we do with the boat?"

"Let us find a place for it far enough from the shore to be beyond reach
of the river, and hide it, so there will be no further danger of its
disappearance."

"We are so used to have things get away from us that it has become a
habit," said Harry, laughing.

While they were engaged in the task of drawing the boat up, Red Angel
appeared, excitedly chattering and endeavoring to attract their
attention, and frequently running back in the direction of the wagon.

"What is the matter with him? I never saw him with such antics before."
George, who had the greatest control over him, ran up and tried to catch
him, but the little fellow avoided capture, and whenever George would
get near he would spring toward the wagon, keeping up his excited
gesticulations all the while.

The Professor now ran forward without another word, and Harry stood
there wondering what had happened, or was about to happen. As he ran
past George, who was still trying to get Angel, the Professor merely
said: "He is trying to get you to go to the wagon."

The boys understood, and both started on a run. Harry was the first to
get there. The team had disappeared!

Their further adventures on the island are related in the next book,
entitled "The Mysteries of the Caverns."

* * * * *

GLOSSARY OF WORDS USED IN TEXT

Absorb. To take into; or to take up into itself.

Accomplishment. Fulfillment; completion; perfection.

Accumulation. Adding to; to bring together.

Acquired. To take; the act of getting anything.

Activities. Exertion of energy; action.

Adjacent. Close to; near the object referred to.

Affinity. Any natural feeling, drawing, liking, inclination,
or affection for another.

Agility. Quick; sprightly.

Agitated. Excited; much perturbed.

Albumen. The chief substance in an egg. The nutritive
material withi