TABLE OF CONTENTS. VII 



CHAPTER XVI. 



GEOLOGY OF MOXROE COUNTY. 

 By A. H. Worthen Pages 266-285 



CHAPTER XVII. 



GEOLOGY OF MACOUPIX COTJNTY. 



By A. H. Worthen Pages 286-305 



CHAPTER XVIII. 



GEOLOGY OF SAXGAMOX COUXTY. 

 By A. H. TVorthen Pages 306-319 



P A K T II. 



PALAEONTOLOGY OF ILLINOIS. 



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



SECTION I. 

 Fossils of the Bnrlington Limestone Pages 323-432 



SECTIOX H. 

 Fossils of the Keokuk group Pages 483-529 



SECTIOX m. 

 Fossils of the St. Lonis group Pages 530-545 



SECTIOX IV. 

 Fossils of the Chester group Pages 546-559 



SECTIOX V. 

 Fossils of the Coal Measures Pages 560-619 



