recross the river. The flight to
the north. Recrossing. Return home.
XII. THE PROBLEM ABOUT THE CAVE
Their happy reception at the Cataract. Why their observations of the
moon led them astray. Distinguishing fixed stars. How Angel fought
the savages. Individuality. The chief an enigma. How he used the
grindstone. His interest in machinery. The yardstick of the heavens to
measure degrees. The Constellation Orion. The new calf. Milk and
butter. The mysterious visit of the chief to the clay banks. Eating clay.
Observations by Ralph and Tom. The clay eaters of the world. The
cave and the treasure. The Professor refuses to take a share of it.
Determination of the boys. Harry and George go to the cave. Go back
for Ralph and Tom.
XIII. THE ACCIDENT TO JOHN AND THE RESTORATION OF
MEMORY
An island of abundance. Nuts and vegetables. Oils for illumination.
Unripe fruit. How nature protects her products. Eggs. How good and
bad are determined. Gases formed within the shell. Building an
addition to their home. Putting up the new building. The accident to
John. A terrible wound in the head. Chief's solicitude for John.
Watching the results of the injury. The human traits in the chief.
Danger point of the fever. The wonderful difference in his eye.
Recovers memory. A deep sleep. His first words. Aphasia. The brain
center. His initials J. L. V. on the match safe. Recognizing the chief.
XIV. JOHN'S WONDERFUL STORY
Native of New England. Ran away to sea. Fortunately fell into hands of
a humane captain. Became chief clerk. Learned navigation. The
captain's interest in him. The return. The meeting with the captain's
daughter. The wedding. Sailing east with his wife in the captain's vessel.
A plague-infected port. Death of his wife. Leaving the accursed port.
Death of the captain. Disposing of the ship. Travels through India.
Enlists at Gibraltar. Serves in Matabela campaign. Goes to England. Is
tutor to a Lord. Goes to Greece. Serves in two campaigns. Returns to
New York. Enlists for campaign against Indians. Five years' service.
Goes to Egypt to conduct explorations. Returns fever-ridden. Accepts
Professorship. Signs as Professor in the schoolship Investigator.
Sickness prevents his sailing. Wanders to San Francisco. Engages with
friends to search South Sea Islands for treasures. Shipwrecked. Finding
a cave. Captured by savages. Escapes. Meets with an accident. Loses
all memory.
XV. CHIEF AND THE POISON PLANT
How John's story impressed them. How the boys entertained John with
the stories of their adventures. The story of the yaks. John tells them
how they could have controlled them with the different knots and
hitches. The spectroscope. Light as a medium. The composition of the
heavenly bodies. The solar spectrum. The boys remember John's story
of the cave. His story confirming their knowledge about the savages.
The concert with the flute and violin. Making glass for windows. Silver
and mercury. Looking-glasses. Amalgam. Making small glass mirrors
for the inhabitants. The chief's surprise at the mirrors. His contribution
to the larder. The Amarylla. The poison plant. The boys' suspicions of
the chief. Good for food. Stomach or blood poisons.
XVI. A SURPRISING TRIP TO THE CAVE
Completion of the house. Furnishing it. The chief recovers health.
Showing John the message from the lifeboat. "Waters" one of his crew.
The mystery of the photograph. Information that others of the ill-fated
Investigator were on the island. Reasons why certain tribes sacrificed
white captives. A new expedition planned. Determine to go overland.
Making new guns. Ammunition. The boys invite Ralph and Tom to
visit the cave. The surprise of the boys at the skeletons and the treasure.
Exploring the cave. A terrific roar. Alarmed. Determine to investigate.
Finding the Professor and John. The surprise party.
XVII. THE WONDERFUL PORTABLE FORT
The boys ask John about his wonderful cave. The charted treasure
caves. Seeing the treasure in the cave on the hill where the boys were
rescued. An occupied cave. The medicine men. The two entrances and
the cross-shaped interior. How the hoards were acquired. Piracy on the
high seas. The gold and silver of the world. The precious metals taken
to Europe by the Spaniards. Rushing work on the preparations. The gun
barrels. Chief showing the boys how to make and use the bows. The
disappearance of chief. The invention of a portable fort. How it was
made. Stocking the wagon. Experimenting with the fort. Necessity as
the mother of invention. The improvements in the fort. A new
suggestion. Using the fort as a raft.
XVIII. TRAILING A WARRING PARTY OF NATIVES
Weight and gravity. Acting in all directions. Proving the law of
universal gravitation. Drilling with the raft equipment. Grinding barley
flour. Making sleeping mattresses. The bustle of final preparations. The
good-by to their herd of yaks. The march to the falls. John discovers a
log in
![](qr/27787/3.png)
Continue reading on your phone by scaning this QR Code
Tip: The current page has been bookmarked automatically. If you wish to continue reading later, just open the
Dertz Homepage, and click on the 'continue reading' link at the bottom of the page.