again to explore cave. The lamps, spears and other equipment.
Exciting discovery of a sail. Signaling the ship. The ship
disappears. Discouragement. Determine to make a large flag and
erect a new flagpole. Visiting the cave. Exploring it. Mounting one
of the lamps on ledge for safety. Water not found where it was on
previous visit. Discovery of a large domed chamber. Bringing
forward the light on the ledge. Entering the chamber. Disappearance
of the light from the ledge. The outlet of the chamber. Searching
for the lost light. Determine to chart the cave. Steps taken.
Surveying methods. Substitutes for paper and pencil. Soot. The
base, the angle, and the projecting lines. How the side walls were
charted.

XIII. THE EXCITING HUNT INT HE FOREST

An eventful day. Accounting for the disappearance of the water in
the cave. The animal in the cave. Subterranean connection with the
sea. Starting to make the large flag. Regulation flag determined
on. The stripes and their colors, and how arranged. Their
significance. The blue field and how studded. Its proportional
size. How the yellow ramie cloth was made white. The bleaching
process. Chloride of lime. The red color. The madder plant. Its
powerful dyeing qualities. Coffee. The surprise party for Harry.
Chicory leaves as a salad. Exhilarative substances and beverages.
The cocoa leaf. Betel-nut. Pepper plants. Thorn apples. The ledum
and hop. Narcotic fungus. "Baby's" experiment with the red dye test
sample. Test samples in dyeing. Color-metric tests in analyzing
chemicals. Reagents. The meaning and their use. Bitter-sweet. Blue
dye. Copper and lime as coloring substance. The completed flag. A
hunting trip for the pole. Making a trailer. A pole fifty feet long
determined on. Tethering the yaks at the river. Searching for pole.
The shell-bark hickory. The giant ant-killer. His peculiarities.
Weight of hickory. Weight of the pole. Problem to convey it to the
river. Determine to get the yaks. Swimming them across the river.
The Professor absent on their return. Searching for the Professor.
A shot heard. Going in the direction of the shot. Another shot from
vicinity of the team. Returning in the direction of last shot. Find
the Professor with team on way to river. How they made a circle
without knowing it. A le