CONTENTS. 



PAGE 



Chapter I. Introductory '1 



Chapter II. The Laurentian System .... 7 

 Notes : — Logan on Structure of Laurentian ; Hunt 

 ON Life in the Laurentian; Laurentian G!raphite; 

 Western Laurentian ; Metamorphism ... 24 



Chapter III. The History of a Discovery ... 35 

 Notes : — Logan on Discovery of Eozoon, and on 

 Additional Specimens 48 



Chapter IV. What is Eozoon ? 59 



Notes: — Original Description; Note by Dr. Car- 

 penter ; Specimens from Long Lake ; Additional 

 Structural Facts 76 



Chapter V. Preservation of Eozoon .... 93 

 Notes:— Hunt on Mineralogy of Eozoon; Silici- 

 FiED Fossils in Silurian Limestones; Minerals 



ASSOCIATED WITH EoZOON; GlAUCONITES . , . 115 



Chapter VI. Contemporaries and Successors . . 127 

 Notes : — ON'STROMATOPORioyE ; Localities op Eozoon 165 



Chapter VII. Opponents and Objections . . . 1G9 

 Notes : — Objections and Replies ; Hunt on 

 Chemical Objections ; Reply by Dr. Carpenter 184 



Chapter VIIL The Dawn-Animal as a Teacher in 



Science 207 



Appendix 235 



Index 237 



