Kerieivs — The Geology of Illinois. 



471 



Table shoiving the Distribution of Fossils in the White Chalk of Sainault. 



BacuUtes Faujasii, Lank 



Belemnitella quadrata, d'Orb. . . 

 B. mucronata, d'Orb 



Craie de 

 Spiennes. 



Craie de 

 Nouvelles. 



Craie 

 d'Obourg. 



Craie de 

 St. Vaast. 



X 



X 

 X 

 X 

 X 



X 



X 



X 

 X 

 X 

 X 

 X 

 X 



X 



X 

 X 

 X 



X 



X 



X 



X 



X 



X 

 X 



X 

 X 



X 



X 



X 

 X 



X 

 X 

 X 



X 

 X 



X 

 X 



X 



X 

 X 



X 



X 



X 



X 



Ostrea flabelliformis, Nils 



0. larva, Lank 





0. sulcata, Blum 



0. lateralis, Nils 



Janira substriacostata, d' Orb. . . . 



Terebratula earnea, Sow 



T. Heberti, d'Orb 



Rhynchonella subplicata, d'Orb. 

 B. octoplicata, d'Orb 



Terebratulina striata, Walk.... 



Avicula ccerulescens, Nils 



Fissurirostra Pallisi, Woodw... 

 Crania antiqua, Deft" 



Pecten eretosus, Defr 



3£aff as puinila, Sow 



Nodosaria Zippei, Eeuss 



Inoceramus, large sp 



Bulimina variabilis, d'Orb. ... 

 Cristellaria rotulata, d'Orb. ... 

 Ananchytes ovata. Lank 



A. gibba. Lank 



A. conoidea. Lank 



Cardiaster granulosus, Forbes . . . 

 C. Seberti, Cott 



Large Spongice, etc 



It would be interesting to find Messrs. Cornet and Briart's divisions 

 corroborated by observations elsewhere on the Continent. 



4th September, 1872. Gr. A. L. 



II. — The Geology of Illinois. 



JG". NOEWOOD received the appointment of Geologist to the 

 I State of Illinois in 1851, with an annual appropriation 

 of 3000 dollars. In 1853 this sum was increased to 5000. Dr. 

 Norwood published two small pamphlet reports, amoimting to 111 

 pages. In 1858 A. H. Worthen succeeded Dr. Norwood, and has 

 worked continuously from that to the present time. Four volumes 

 include the results of his labours," amounting to 1733 pages of imperial 

 octavo and 101 lithographic plates, executed by the Western En- 

 graving Company of Chicago. When two additional volumes shall have 

 been issued, the Survey, according to the original plan of the present 

 director, will be completed. The date of the first volume is 1866 ; 

 that of the last, 1870. The gentlemen who have contributed to 

 these volumes are : A. H. Worthen, Director ; J. S. Newberry, 

 L. Lesquereux, F. B. Meek, J. D. Whitney, J. V. Z. Blaney, Henry 

 Engelmann, E. D. Cope, H, A. Prout, H. M. Bannister, H. C. 

 Freeman, S. H. Scudder, F. H. Bradley, H. A. Green, J. G. 

 Norwood. 



