rn of Angel with a rusted modern gun.
Iron or steel guns. Powder as a factor in making weapons.

IX. MAKING ELECTRICITY

Their present condition. What they had accomplished. Working for
love. Contemplating the hoard in the cave. Selfishness at the
bottom of the pirates' lives. Gathering sugar cane. Honey, and its
uses in ancient times. Beets and various tubers. Fattening
properties. Nitrogenous matter. The load of cane. Making a sugar
mill. Lime in sugar-cane juice. Clarifying sugar. A candy pulling.
Granulating sugar. The earth as a magnet. Electricity. Positive and
negative. Magnetic poles. Likes and unlikes. Making a magnet.
Retaining magnetism in a bar.

X. STARTING ON THE VOYAGE TO THE WEST

A barometer. Air pressure. A compass. The atmosphere. Dry weather.
Observing weather conditions. Providing compartments in the boat
for provisions. Bedding. Water supply. Faith. Preparing a tablet
for the Cataract. A terrific storm. A delayed departure. How delays
have often proved valuable to investigators. Starting the voyage to
the west. Striking a course. Observations on speed. Going with the
wind. Tacking. Angles of incidence. The action of air on a surface.
Determining the pressure of air by its velocity. Flying machines.
Time and speed in a vessel. Qualities necessary in a sailor.

XI. A TERRIBLE VOYAGE AND THE SHIPWRECK

The shadows of night. Recalling memories of their shipwreck. The
charting board. Cardinal points of the compass. How direction
traveled is laid out on the chart. Measurement by angles. A weary
night. The watches. The wind changing. The second day. Cliffs
beyond. Sailing against the wind. Rounding the northern point. The
fourth day. The increasing gale. Night. The lights to the south.
The gale turning to a storm. Driven back. A night without sleep. An
appalling monsoon. Springing a leak. The Professor exhausted.
Danger ahead. The cliffs. A maelstrom in sight. Averting the
danger. Recovery of the Professor. Steering for shore. Striking the
beach. The vessel shattered. Stranded miles from home. Taking up
the march. Putting an inscription on the boat. Nearing home.

XII. THE RETURN TRIP. THE ORANG-OUTANS

The blackened fire space. Discovery of their own camp in the
forest. An adventure in the woods. A huge bear. George's shot.