PREFACE. 5 



eties or Academies, in the following order: Academy of Natural Sciences 

 of Philadelphia ; American Philosophical Society, Philadelphia ; Society of 

 Natural History, Boston ; American Academy, Boston ; Lyceum of Natural 

 History, and later. Academy of Sciences, New York; and so on, not over- 

 looking the Reports of the American Association for the Advancement of 

 Science. The foreign serial works of most importance to the geologist are 

 the Journal of the Geological Society of London ; the Geological Magazine, 

 London ; Bulletin of the Geological Society of France ; " Coraptes Bendus " 

 of the Academy of Sciences, Paris ; Jahrbuch f iir Mineralogie, Geologic und 

 Palaeontologie, Stuttgart; Zeitschrift der deutschen geologischen Gesell- 

 schaft, Berlin ; Jahrbuch der k.-k. geologischen Reichsanstalt, Vienna. 



For foreign facts and views I am largely indebted to the able English 

 works of Sir Archibald Geikie, Professor Prestwich, and Professors 

 Etheridge and Seeley, the very full Traite de Geologic of Professor 

 A. DE Lapparext, and the Elemente der Geologic of Dr. Credner. 



As the volume is necessarily larger than that of the edition of 1880, — 

 partly through more text, but also through a greater profusion of illustra- 

 tions, — the instructor may find it convenient, in his use of the Historical 

 part, to take up successively its two great subjects, the geological and 

 physical history of the continents, and the history of its life. 



JAMES D. DANA. 

 New Haven, Conn., January, 1895. 



