31 



CHAPTER XIV. 

 Geology of Peoria County, A. H. WORTHEX 235-252 



CHAPTER XT. 

 Geology of McDonough County, A. H. WORTHEX 253-265 



CHAPTER XVI. 

 Geology of Monroe County, A. H. WORTHEX 266-285 



CHAPTER XVII. 

 Geology of Macoupin County, A. H. WORTHEX 286-305 



CHAPTER XVIII. 

 Geology of Sangamon County. A. H. WORTHEX 306-319 



PART II. 



Palaeontology of Illinois, F. B. MEEK and A. H. WOR- 

 THEX 323-619 



32. Geological Survey of Illinois, A. H. WORTHEX, Director, 

 Vol. VI, Geology and Palaeontology, pp. i-iii and 1-532, 

 plates I-XXXIII, Imp. 8vo., Chicago, 1875. 



CONTEXTS. 

 Letter to the Hon. John L. Beveridge iii 



PART I. 



CHAPTER I. 

 Coal Measures, A. H. WORTHEX 1-8 



CHAPTER II. 

 Geology of Clark County. A. H. WORTHEX 9-21 



CHAPTER III. 



Geology of Crawford and Jasper Counties, A. H. WOR- 

 THEX... ...22-36 



