CONTENTS. 



CHAPTER I. 

 INTRODUCTION GENERAL PRINCIPLES OP SCIENCE, . : . 9 



CHAPTER II. 



PHYSICS: MATTER AND THE ATTRACTIVE FORCES, . . . 15 



CHAPTER III. 

 HEAT : ITS SOURCES, EFFECTS AND MODE OF TRANSMISSION, . 24 



CHAPTER IV. 

 PROPERTIES OF SOLIDS, LIQUIDS AND GASES, . . . . 32 



CHAPTER V. 



THE COMPOSITION AND RESOLUTION OF FORCES, .... 43 



CHAPTER VI. 



VIBRATIONS OF THE PENDULUM CORDS AND AIR, . " . . 50 



CHAPTER VII. 



FORCE, WORK AND ENERGY KINETIC AND POTENTIAL, ... . 58 



CHAPTER VII Continued. 

 SIMPLE MACHINES, LEVER PULLEY, SCREW AND WHEEL, . . : 68 



CHAPTER VIII. 

 LIGHT : ITS SOURCESINTENSITYREFLECTION AND REFRACTION, 70 



CHAPTER IX. 

 OPTICAL INSTRUMENTS RAINBOW AND COLOR, .... 78 



CHAPTER X. 

 FRICTIONAL ELECTRICITY, LIGHTNING AND MAGNETISM, . . 87 



CHAPTER XI. 



DYKAMICAL ELECTRICITY AND IT APPLICATIONS, . 93 



(v) 



