CONTENTS. IX 



PAOB 



that which ch'aws it Westwards in the Equatorial Regions 

 being the Combined Action of all other Powers of Gravi- 

 tation. 



In like manner, the Tidal Actions of the Sun and Moon 

 are Actions of Vis-Inertise, by which the Ocean resists the 

 Combined Action of all other Powers of Gravitation ; and the 

 Counter-tides raised by these latter are Actions of Vis-Inertise 

 in relation to the Gravitation of the Sun and Moon. 



The Combined Action of Gravitation which resists that 

 of any individual Force under consideration may be termed 

 Astral Gravitation . . . . . . . .57 



CHAPTER V. 



That Neavton's Definition of Vis-Inertia is Erroneous. 

 That Matter, by virtue of an Inherent Force of Iner- 



TION, endeavours CONSTANTLY TO BRING ITSELF TO A 



State of Rest . 66 



CHAPTER VI. 



That the Moon may be in Equilibrium between its 

 Gravitation towards the Earth and towards other 



BODIES : 



Its Movements accord with the idea of its Orbital 

 Motion being caused by the Earth's Rotation and 

 its Apparent Motion by Astral Gravitation . . 74 



CHAPTER VII. 



If the Moon's Motions are caused as above suggested it 

 must be inferred that the Orbital Motions of the 

 Planets are caused by the Sun's Rotation. . .79 



The Relative Velocities of the Planets accord with 

 the above suggestions, and so Corroborate the 

 Current-Creating Action of Vis-Inertia described 

 IN Book II 80 



A Reconsideration of the Nature of the Motion of the 

 Earth, shoaving that Vis-Inerti.e is the Cause of 

 Gravitation 2>Q 



