CONTENTS 



CHAPTER VII 



The Writers who, with Descartes, gave rise to the Cartesian Phil- 

 osophy 72 



CHAPTER VIII 



SIR FRANCIS BACON Origin of the Inductive Philosophy and the 

 scientific investigation of Nature 84 



CHAPTER IX. 



The Observation of Nature and of Natural Phenomena GALILEO 

 GALILEI His life and discoveries 91 



CHAPTER X 



SIR ISAAC NEWTON His Life and Discoveries in Mathematics 

 The Properties of Light and Laws of Gravitation His dislike 

 of theorizing 106 



CHAPTER XI 



LUCRETIUS'S Theory of the Atoms The Existence of the Ethereal 

 Medium Transmission of Light and Heat Nature of Sound 118 



CHAPTER XII 



Gravitation The Properties of Matter The Kinetic Theory and 

 Nature of Gases 142 



CHAPTER XIII 



Constitution of Matter Chemistry The Elements The Phlo- 

 giston Theory LAVOISIER Oxygen and Combustion . .161 



CHAPTER XIV 



The theory of the Chemical Atoms JOHN DALTON Law of defi- 

 nite Proportions Indestructibility of the Atoms Molecular 

 Formations Crystallization . . . .* ' . .168 



CHAPTER XV 



Action of Chemical Affinity Galvanic action Magnetism 

 Electricity The Kathode and Rontgen Rays Persistence of 

 Energy Solar Heat the scource of all Energy Origin of Solar 

 Heat Properties and Action of the Ether Dissipation of 

 Energy Entropy 17( 



