Ⅰ．Magnetism，Fundamental Principles 9
Ⅱ．Magnetic Measurements，Earth＇s Magnetism 25
Ⅲ．Electrostatics，Fundamental Principles 52
Ⅳ．Condensers 77
Ⅴ．Current Electricity，Circuit Principles 100
Ⅵ．E．M．F．and Circuits 111
Ⅶ．Wheatstone Bridge and Potentiometer 121
Ⅷ．Energy，Heating Effect，Thermoelectricity 141
Ⅸ．Chemical Effect of Current，Cells 154
Ⅹ．Magnetic Effect of Current 170
Ⅺ． Electrodynamics 192
Ⅻ．Electromagnetic Induction 208
ⅩⅢ．Magnetic Materials，A．C．Theory 232
ⅩⅣ．Electrons and Applications 247
Answers 261
Index 263