CONTENTS.

[PART I.]
POLYPHASE CURRENTS.
CHAPTER I.
Biographical and Introductory.[3]
CHAPTER II.
A New System of Alternating Current Motors and Transformers.[7]
CHAPTER III.
The Tesla Rotating Magnetic Field.—Motors with Closed Conductors.—Synchronizing Motors.—Rotating Field Transformers.[9]
CHAPTER IV.
Modifications and Expansions of the Tesla Polyphase Systems.[26]
CHAPTER V.
Utilizing Familiar Types of Generators of the Continuous Current Type.[31]
CHAPTER VI.
Method of Obtaining Desired Speed of Motor Or Generator.[36]
CHAPTER VII.
Regulator for Rotary Current Motors.[45]
CHAPTER VIII.
Single Circuit, Self-starting Synchronizing Motors.[50]
CHAPTER IX.
Change from Double Current to Single Current Motors.[56]
CHAPTER X.
Motor with "Current Lag" Artificially Secured.[58]
CHAPTER XI.
Another Method of Transformation from a Torque to a Synchronizing Motor.[62]
CHAPTER XII.
"Magnetic Lag" Motor.[67]
CHAPTER XIII.
Method of Obtaining Difference of Phase by Magnetic Shielding.[71]
CHAPTER XIV.
Type of Tesla Single-Phase Motor.[76]
CHAPTER XV.
Motors With Circuits of Different Resistance.[79]
CHAPTER XVI.
Motor with Equal Magnetic Energies in Field and Armature.[81]
CHAPTER XVII.
Motors with Coinciding Maxima of Magnetic Effect in Armature and Field.[83]
CHAPTER XVIII.
Motor Based on the Difference of Phase in the Magnetization of the Inner and Outer Parts of an Iron Core.[88]
CHAPTER XIX.
Another Type of Tesla Induction Motor.[92]
CHAPTER XX.
Combinations of Synchronizing Motor and Torque Motor.[95]
CHAPTER XXI.
Motor with a Condenser in the Armature Circuit.[101]
CHAPTER XXII.
Motor with Condenser in One of the Field Circuits.[106]
CHAPTER XXIII.
Tesla Polyphase Transformer.[109]
CHAPTER XXIV.
A Constant Current Transformer with Magnetic Shield Between Coils of Primary and Secondary.[113]
[PART II.]
THE TESLA EFFECTS WITH HIGH FREQUENCY AND HIGH POTENTIAL CURRENTS.
CHAPTER XXV.
Introductory.—The Scope of The Tesla Lectures.[119]
CHAPTER XXVI.
The New York Lecture. Experiments with AlternateCurrents of Very High Frequency, and TheirApplication to Methods of Artificial Illumination,May 20, 1891.[145]
CHAPTER XXVII.
The London Lecture. Experiments with AlternateCurrents of High Potential and High Frequency,February 3, 1892.[198]
CHAPTER XXVIII.
The Philadelphia and St. Louis Lecture. On Lightand Other High Frequency Phenomena, Februaryand March, 1893.[294]
CHAPTER XXIX.
Tesla Alternating Current Generators for HighFrequency.[374]
CHAPTER XXX.
Alternate Current Electrostatic Induction Apparatus.[392]
CHAPTER XXXI.
"Massage" with Currents of High Frequency.[394]
CHAPTER XXXII.
Electric Discharge in Vacuum Tubes.[396]
[PART III.]
MISCELLANEOUS INVENTIONS AND WRITINGS.
CHAPTER XXXIII.
Method of Obtaining Direct from Alternating Currents.[409]
CHAPTER XXXIV.
Condensers with Plates in Oil.[418]
CHAPTER XXXV.
Electrolytic Registering Meter.[420]
CHAPTER XXXVI.
Thermo-Magnetic Motors and Pyro-Magnetic Generators.[424]
CHAPTER XXXVII.
Anti-sparking Dynamo Brush and Commutator.[432]
CHAPTER XXXVIII.
Auxiliary Brush Regulation of Direct Current Dynamos.[438]
CHAPTER XXXIX.
Improvement in Dynamo and Motor Construction.[448]
CHAPTER XL.
Tesla Direct Current Arc Lighting System.[451]
CHAPTER XLI.
Improvement in Unipolar Generators.[465]
[PART IV.]
APPENDIX: EARLY PHASE MOTORS AND THE TESLA OSCILLATORS.
CHAPTER XLII.
Mr. Tesla's Personal Exhibit at the World's Fair.[477]
CHAPTER XLIII.
The Tesla Mechanical and Electrical Oscillators.[486]


PART I.
POLYPHASE CURRENTS.