CONTENTS 



CHAPTER I. NATURE'S INSURGENT SON 



CHAPTER H.THE ADVANCE OF SCIENCE, 1881-1906 66 



CHAPTER III. NATURE'S REVENGES: THE SLEEP- 

 ING SICKNESS .... 159 



LIST OF ILLUSTRATIONS 



FRONTISPIECE : Profile views of the Cranial Dome of Pithe- 

 canthropus erectus, the ape-like man from 

 an ancient river gravel in Java, and of a 

 Greek skull. 



FIG. i. Frontal view of the Cranial Dome of Pithecanthropus 16 

 FIG. 2. Frontal view of the same Greek skull as that shown in 



the frontispiece ... x6 



FIG. 3. Eoliths, of 'borer' shape, from Ightham, Kent ... 18 



FIG. 4. Eoliths of trinacrial shape, from Ightham, Kent ... 20 



FIG. 5. Brain casts of four large Mammals 23 



FIG. 6. Spironema pallidum, the microbe of Syphilis discovered 



by Fritz Schaudinn 37 



FIG. 7. The Canals in Mars 43 



FIG. 8. The Canals in Mars 44 



FIG. 9. Becquerel's shadow-print obtained by rays from Uranium 



Salt 73 



FIG. 10. Diagrams of the visible lines of the Spectrum given by 



incandescent Helium and Radium 76 



FIG. ii. The transformation of Radium Emanation into Helium 



(spectra) ... 83 



FIG. 12. Dry-plate photograph of a Nebula and surrounding 



stars 90 



vii 



