TABLE OF CONTENTS. 



l^^RT I. 



Page. 



ClFAPTEK I. GkNERAI OBSERVAIIONS UPON THE COLLECIIONS, AND THE PERIOD THEY REPRESENT.. 5 



II. Classification 21 



_ III. Fossils op the Primordial period 32 



IV. Fossils or the Canadian period 50 



V. Fossils of the Trenton period 62 



VI. Fossils OF the SuBCARBONiFERous period 79 



VII. Fossils of the Carboniferous period 96 



VIII. Fossils of the Jurassic period 162 



IX. Fossils of the Cretaceous period 169 



Xj Fossils of the Tertiary period 206 



7 



