BULLETIN NO. 4 



OF THE 



Illinois State Museum 



OF 



NATURAL HISTORY. 



UPPEK DEVONIAN AND NIAGAEA CKINOIDS. 



By S. a. miller and Wm. F. E. GURLEY. 



With Compliments of 



Prof. wm. F. E. GllRLHY, 



STATE GE0LO3IST, 



SPRINGFIKLD, ILLINOIS, IT. S. A. 



