CONTENTS. 



CHAPTER I. 



FRICTIONAL ELECTRICITY. 



LESSON PAGE 



I. Electrical Attraction and Repulsion ... I 



II. Electroscopes II 



III. Electrification by Induction . . . . 18 



IV. Conduction and Distribution of Electricity . . 28 

 V. Electrical Machines 40 



VI. The Leyden Jar and other Accumulators . . 53 



VII. Other Sources of Electricity .... 62 



CHAPTER II. 



MAGNETISM. 



VIII. Magnetic Attraction and Repulsion ... 72 



IX. Methods of Making Magnets .... 82 



X. Distribution of Magnetism ..... 87 



XI. Laws of Magnetic Force ..... 95 



Note on Ways of Reckoning Angles and Solid-Angles . IO8 



Table of Natural Sines and Tangents . . . .Ill 



XII. Terrestrial Magnetism . . . . . 112 



