sunlight. Bacteria. Glass houses. The eye. How it expresses
character. Laughter. How it brightens the eye. Fishhooks. A fishing
party. The salmon.

XVI. MUSIC AND ANIMALS

Preserving fish. Why heat is used. The use of tin for cans. Music.
The violin made by the boys. Violin strings; what they are made of.
How they are prepared and treated. The concert. How the music
affected Red Angel. John enraptured. How it touched him. The change
in his eyes. The field mouse. How different animals are moved by
music. The lion. Hippopotamus. Tigers. Monkeys. Momentary flashes
of intelligence in John. Building a new wagon. Finding and making
paint. Lead. Fermentation. Flax. Driers. Turpentine. Synthetic
food. Analysis. Tubes for powder. Completing the guns. Stocking the
wagon with provisions. Starting on the trip. Jack and Jill. The
sixth trip.

XVII. THE TRIP THROUGH THE DENSE FOREST

The trip along Cataract River. The great forest. How Angel
traveled. Reaching South River. Discovering a second falls. Where
the debris on a seashore comes from. The jungle. Leaving the river.
The two animals in the night. The camp aroused. A fight in the
dark. The puma. The frightened team. The injured yak. Animal
language. The panther. Trying to avoid the forest. Growing denser.
John and Harry scouting through the forest. Blazing a trail. The
hidden luncheon. End of the forest. Returning to the wagon. The
noise in their path. The wagon following the trail. The injured yak
improving.

XVIII. SEEING THE FIRST SAVAGES

Teaching Angel. Finding a campfire. Determine from the conditions
that it was recently made. Prospecting from the tops of trees. A
climbing ring. How made and used. The climbing operation. Harry
sees another forest to the south. Clear in the west. The wounded
yak calls a halt. Resuming the journey. Harry in the grasp of a
giant anaconda. John severs its body with a bolo. Boa constrictor.
The python. The Cashew tree. Gum arabic. Seeing the West River.
Discovering signs of habitations to the south. Course to be
followed in meeting the natives. Hearing voices in the night.
Crackling of twigs. A party of savages. The next morning. Examining
the tracks made by the midnight party. Following the trail thus
made. The open country. The first view of the inhabitants.