n. 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 lifeb