CONTENTS

The Pile of Draughtsmen.
The Decanter, Card, and Coin.
A Clever Blow.
The Obedient Coin.
To Cut a String With Your Hands.
The Rebound.
A Fiery Catapult.
To Make an Exact Balance.
The Recomposition of Light.
The Mysterious Apple.
Economical Letter-Scales.
Tracing a Spiral.
The Inclined Plane.
To Cut a Bottle With a String.
Equilibrium of a Knife in Mid-Air.
A Trick With Four Matches.
The Distance of an Inaccessible Point.
Practical Tracing of a Meridian Line.
To Measure the Height of a Mountain.
To Take Up Four Knives with One.
The Tack in the Ceiling.
The Jumping Pea.
To Acquire a True Eye.
The Air-Tight Stopper.
The Fusee Rocket.
A Novel Table Mat.
Geometrical Paper Band.
Photographic Camera.
The Phantom Needle.
Amphitrite.
Optical Illusions.
The Insensible Coin.
The Asses’ Bridge.
Another Way to Prove the Preceding Theorem.
Indented Angles.
A Cheap Shooting Gallery.
The Coin in Equilibrium.
The Submerged Coin.
The Smoke Rings.
The Walking Cork.
The Obstinate Cork.
Petroleum Pulverizer.
Electric Attraction and Repulsion.
The Bust of the Sage.
The Witchery of the Hand.
The Perspectograph.
Camphor in Water.
A Simple Multiplier.
The Drawing Room Mirror.
Elementary Gas-Burner.
Rapid Vegetation.
Miniature Volcanoes.