ILLINOIS STATE MUSEUM 



OF 



Natural History, 



SPRINGFIELD, ILLINOIS. 



Board of Trustees. 



John P. Altgeld, Governor. 



William H. Hinrichsen, Secrefart/ of State. 



Henby Eaab, Siq)erinten(lent Public Instruction. 



Geokqe Walter Murray, 



Secretary. 



William F. E. Gurley, 



Slate Geologist and Curator. 



