SCIENTIFIC STAFF 



WM. BULLOCK CLARK, State Geologist. 



SUPEKINTENDENT OF THE SURVEY. 



EDWARD B. MATHEWS, . . Assistant State riEOLOGiST. 



CHARLES K. SWARTZ, Geologist. 



EDWARD W. BERRY, Geologist. 



J. T. SINGEWALD, JR., Geologist. 



