Charging the Professor, and his shot. Attacking George. Safety
behind a fallen tree. Search for the luggage. The cries of Angel.
The bear finding their packages. The bear making use of their
things. What they had left. The yellow pear. Guava. The coffee
tree. Cherries. Gathering coffee berries. How Angel made himself
understood. His excitement. The discovery of a number of
orang-outans. Red Angel visits them. He is not welcomed. Return of
the animal. The clearing in the woods. Recalling the fight of the
bears over the honey.

XIII. THE STRANGE VISITOR

The flag on Observation Hill. Approaching Cataract. The alarm by
Red Angel. The house intact. Discovery of a man at the stable. His
peculiar actions. Lost memory. Aphasia. Unable to speak.
Recognizing the signal flag on the strange man. Provided with
clothing. A peculiar malady. The instinct of self-preservation.
Going with George to Observation Hill. The actions of a sailor. The
stranger visits the workshop. Expert with the use of tools.
Projecting an exploring trip by land. Naming the stranger John.
Startled at sound of the name. Mechanically performing work.
Examining the skulls.

XIV. AN EXCITING TRIP TO THE FALLS

The food supply. Butter. Cream. Centrifugal motion. Difference in
specific gravity between cream and milk. Making a cream separator.
Vegetables. Onions. Chives. The stranger as a prospector. Procuring
samples. Peculiarities of his malady. An exciting encounter with a
bear. John's skill as a hunter. Another honey tree. Killed with a
spear. The bear pelt. Visiting the falls. Action to indicate that
John recognizes the falls.

XV. THE STORY OF THE CAVE

Mystery about John. Humanity's search. The desire to know and
acquire. Gathering supplies for an extended trip by land. The boys
visit the cave. Determine to search the chamber visited by the
Professor. Gorgeous calcareous hangings. The ghosts of past
centuries. Gold and silver vessels. Skeletons. A recess. A row of
chests. Spanish guns. The chained skeletons in the recess. An
arsenal. The struggle. Locked in the embrace of death. Ancient
origin of the cave. Paleontology. Stone and bronze ages. Atlantis,
the great continent in the Atlantic, which disappeared. Story of
the Egyptian priests. The actinic rays. Purifying action of