s
it is impossible for Kepler's Laws to be reconciled in any way with our
present theory of the aether.

In the concluding chapter on the unity of the universe, certain views
are suggested as to the ultimate constitution of all matter, upon an
aetherial basis, which hypothesis practically resolves itself into an
electric basis for all matter. It is suggested that aether and
electricity are one and the same medium, both being a form of matter,
and both possessing exactly the same properties, viz. atomicity, weight,
density, elasticity, inertia, and compressibility. This view of matter
harmonizes with the most "Modern Views of Matter" as suggested by Sir
Oliver Lodge in his Romanes Lecture 1903.

The author has accepted Newton's way of spelling "_aether_" as given in
his work on _Optics_, and has given "_aetherial_" the same suffix as
"material," in order to differentiate the word from "ethereal," which is
too metaphysical a term for a material medium.

_Nottingham_,
_Sept._ 1903.

CONTENTS

CHAPTER I

PHILOSOPHY OF GRAVITATION

PAGE
ART. 1. GRAVITATION 1
" 2. CAUSE OF GRAVITATION 1
" 3. NEWTON'S RULES OF PHILOSOPHY 3
" 4. FIRST RULE OF PHILOSOPHY 3
" 5. SECOND RULE OF PHILOSOPHY 4
" 6. THIRD RULE OF PHILOSOPHY 7
" 7. APPLICATION OF RULES TO GRAVITATION 9
" 8. ANALYSIS OF LAW OF GRAVITATION 9
" 9. PRIMITIVE IMPULSE 10
" 10. CENTRIPETAL FORCE 12
" 11. CENTRIFUGAL FORCE 13
" 12. NEWTON'S LAWS OF MOTION 15
" 13. FORCE 16
" 14. FIRST LAW OF MOTION 16
" 15. SECOND LAW OF MOTION 19
" 16. THIRD LAW OF MOTION 20
" 17. SUMMARY OF CHAPTER 22

CHAPTER II