34 



35. A. H. WORTHEN. 



Economic Geology of Illinois. Reprinted from the original 

 reports of the Geological Survey with additions and 

 amendations. Published by authority of the Legislature 

 of Illinois, Springfield, 1882. Vol. I, pp. 541, Vol. II, pp. 

 615, Vol. Ill, pp. 596. 



36. Geological Survey of Illinois, A. H. WORTHEN, Director, 



Vol. VII, Geology and Palaeontology, pp. i-iv and 1-373, 

 plates I-XXXI, Imp. 8vo. Chicago, 1883. 



CONTENTS. 



CHAPTER I. 

 Economical Geology, A. H. WORTHEN 1-51 



PART II. 



Palaeontology of Illinois, Section I, Fossil Fishes, ORESTES 

 ST. JOHN and A. H. WORTHEN 52-264 



Palaeontology of Illinois. Section II. Description of Fossil 

 Invertebrates. 



Descriptions of Lower Carboniferous and Coal Measure In- 

 vertebrates, most of which were originally described in 

 Bull. No. I, 111. State Mus. Nat. Hist., A. H. WORTHEN.. 265-322 



Descriptions of some new species of Fossil Shells from the 

 Lower Carboniferous Limestones and Coal Measures of 

 Illinois, A. H. WORTHEN 323-326 



Descriptions of new Carboniferous Echinoderins, A. H. 

 WORTHEN and S. A. MILLER : 327-338 



Palaeontology of Illinois. Section III. Descriptions of 

 , Fossil Invertebrates, CHARLES WACHSMUTH and W. H. 

 BARRIS 339-364 



37. A. H. WORTHEN. 



Bulletin No. 2 of the Illinois State Museum of Natural 

 History. Descriptions of two new species of Crustacea, 

 fifty-one species of Mollusca, and three species of Crinoids, 

 from the Carboniferous formation of Illinois and adjacent 

 States, pp. 27, Imp. 8vo. Springfield, March, 1884. 



