A Unique Alarm Clock. The Trip to the Island. Preliminary
Exploration. A Rustic Table. The Small Filter. The Barrel
Filter. The _Klepalo_.

CHAPTER VII.

SURVEYING 73

The Surveying Instrument. Spirit Levels. The Tripod. Surveyor's
Chain. Surveyor's Rod. A Simple Method of Surveying. Mapping
the Island.

CHAPTER VIII.

SWIMMING 84

Swimming on a Plank. Shooting the Rapids. Restoring the
Drowned. How to Work over a Patient Alone.

CHAPTER IX.

BRIDGE BUILDING 95

The Spar Bridge. The Rope Railway. The Suspension Bridge.
The Pontoon Bridge. The King Rod Truss. Stiffening the Bridge.
The King Post Bridge.

CHAPTER X.

CANVAS CANOES 109

Uncle Ed's Departure. A Visit from Mr. Schreiner. The Sailing
Canoe. Stretching on the Canvas. The Rudder. The Deep Keel.
Canoe Sails. Lee Boards. Indian Paddling Canoe.

CHAPTER XI.

HOUSE BUILDING 124

The Grass Hut. The Goblins' Dancing Platform. Dutchy
Takes a Dare. A Path Up the Fissure. Rope Ladders. The
Derrick. The Tree House. Sliding Doors.

CHAPTER XII.

TROUBLE WITH THE TRAMPS 138

The Scow is Stolen. A Council of War. Vengeance. A Double
Surprise. Tramp-proof Boat Mooring.

CHAPTER XIII.

WIGWAGGING AND HELIOGRAPHING 144

Wigwag Signals. The Wigwag Alphabet. Abbreviations. Wigwagging
at Night. The Heliograph. The Single Mirror Instrument.
The Sight Rod. The Screen. Focusing the Instrument. Heliograph
Signaling. The International Telegraph Code. The Double
Mirror Instrument.

CHAPTER XIV.

ICE BOATS, SLEDGES AND TOBOGGANS 158

Breaking Camp. The Ice Boat. The Sledge. The Toboggan.
The Rennwolf. Ice Creepers.

CHAPTER XV.

THE SUBTERRANEAN CLUB 171

A Cave-in. Excavating for the Cave. Covering the Cave. The
Big Bug Club. Midnight Banquets. The Club Pin. The Combination
Lock.

CHAPTER XVI.

SCOOTERS 183

A Sail in the Scow. Our Craft Strikes the Ice. The Scooter Scow.
A Sprit Sail. Scooter Sailing. A Meeting of the Society. An