CONTENTS 



PAGE 



PREFACE ... ix 



PREFACE TO THE ENGLISH EDITION . . . xvii 



THE TENDENCIES OF CHEMISTRY . . .21 



TRANSMUTATION AND THE EXPERIMENTS OF RAMSAY 60 

 DOES MATTER EXIST? . . .87 



THE INTERIOR OF THE EARTJH . . .116 



THE SUN . . . . .151 



ECLIPSES . . . . .190 



THE MILKY WAY ..... 220 

 THE ORGANISATION OF MATTER . . .258 



THE FRONTIERS OF THE SCIENCES . . .291 



INDEX ....... 315 



Vll 



226191 



