GEOLOGICAL SURVEY OF ILLINOIS, 



A. H. WOHTHEX, DIBECTOE. 



VOLUME V. 



GEOLOGY AND PALEONTOLOGY. 



GEOLOGY, 



BY A. H. WORTHEX AM> JAMES SHAW. 



PALEONTOLOGY, 



BY F. B. MEEK AND A. H. WORTHEX. 





PUBLISHED 



BY AUTHORITY OF THE L E G I S I. A T r R F. OF I T. 1. 1 X r T : 



1 8 7 :3 . 



