CONTENTS. 



PART II. \Continued?^ 

 Archebiosis. 



CHAPTER XII. 



Pages 



Explanation of Apparent Discrepancies and Difficulties .. 1-41 



CHAPTER Xm. 

 Crystals and Organisms : Causes which determine their Form 



and Structure .. .. .. .. .. .. 42-85 



CHAPTER XIV. 

 The Fundamental Properties of Living Matter .. .. 86-119 



CHAPTER XV. 

 Development of the Primordial Forms of Life : their Relation- 

 ship to one another .. .. .. .. .. 120-167 



PART III. 

 Heterogenesis. 



CHAPTER XVI. 



Ancient and Modern Views concerning Heterogenesis .. 171-19T 



CHAPTER XVII. 



Synthetic Heterogenesis .. .. .. .. .. i92-2'^3 



CHAPTER XVIII. 

 The Panspermic Hypothesis .. .. .. .. .. 264-306 



3,il67o 



