CONTENTS. 



CHAPTER I. 



PAGE 



INTRODUCTION i 



Definition of Gravitation. Vague Conjectures of Philoso- 

 phers. Cause of Mechanical Motion of Matter immaterial. 

 "Incapability of Matter at Rest to put itself in Motion." 

 Transmission of mechanical Force by passive Matter Origi- 

 nal Knowledge of the Properties of Matter obtained by experi- 

 mental Investigation. The Inductive System. Discordance 

 of Mechanical, Chemical, and Materialistic Doctrines of the 

 original Cause of Motion of Matter. Real Source of natural 

 Motive-Power. 



CHAPTER II. 



THE MOMENTUM OF THE PLANETS A SOURCE OF NAT- 

 URAL MOTIVE -POWER. ESTIMATES OF PLANETARY 

 FORCES, MAGNITUDES, AND REVOLUTIONS 12 



Multitudes of Suns and Worlds. Orbital Momentum of the 

 Earth. Swift Motion of Planets. Table of ' comparative 

 Magnitudes and Velocities of Planets. Popular Ideas of the 

 Reasons for the Revolving 'Movements of the Planets; as for 

 producing Day and Night for Animal Refreshment, Seed-time 

 and Harvest. Utilization of an universal Electric Ether for 

 diffusing the Impulses imparted to the swiftly revolving Plan- 

 ets. The Phenomena of the Movements of Matter on the 

 Earth's Surface are producible by the mechanical Impulse 

 imparting Rotation to one Cylinder of a Holtz's Electrical Ma- 

 chine opposite to the other; a Movement analogous to the 

 Rotation of the Earth opposite to the Globe of the Sun. 

 Electric Vibrations of Nerves. 



