CONTENTS. 



CHAPTER I. INTRODUCTORY. 



PAGE. 



Science and Recreation The Book of Nature The Senses Natural History 



Natural Philosophy Matter Objects Properties of Matter I 



CHAPTER II. OPEN-AIR SCIENCE. 



Science in the Open Air Aphides Evaporation by Leaves An Aquarium The 

 Cataleptic Fowl Needle Points and Thorns Microscopic Aquarium C.ape 

 Grisnez Crystals Ice on the Gas Lamps ... 6 



CHAPTER III. PHYSICS. 



Physics The Meaning of Physics Forces of Nature Gravity Cohesion 



Chemical Attraction Centre of Gravity Experiments Automaton Tumblers ... 22- 



CHAPTER IV. PHYSICS (Continued}. 



Some Properties of Solid Bodies Inertia Motion Friction The Pendulum Equi- 

 librium 35 



CHAPTER V. GASES. 

 Gases and Liquids Pressure of the Air Experiments 44 



CHAPTER VI. WATER. 



About Water Hydrostatics and Hydraulics Law of Archimedes The Bramah 



Press The Syphon 59 



CHAPTER VII. HEAT. 



Heat What it is Theory of Heat The Thermometer Expansion by Heat 



Ebullition and Distillation ... ... ... ... ... ... ... ... 72 



CHAPTER VIII.-- HEAT (Continued}. 



Specific Heat Fusion Latent Heat Conduction and Convection of Heat 



Calorescence 8& 



CHAPTER IX. LIGHT. 



Light and its Sources What is Light? Velocity of Light Reflection and Refraction 



Relative Value of Lights , 93- 



CHAPTER X. LIGHT (Continued}. 



Vision and Optical Illusions The Eye Described Accommodation of the Eye 



Chromatic Aberration Spinning Tops ... ... ... ... ... ... ... 102: 



CHAPTER XL OPTICS. 



Optical Illusions Zollner's Designs The Thaumatrope Phenokistoscope The 



Zootrope The Praxinoscope The Dazzling Top ... lifr 



CHAPTER XIL OPTICS (Continued}. 



Optical Illusions Continued Experiments The Talking Head Ghost Illusions ... 129. 



b 



