subsurface geology and coal resources of the pennsylvanian system ...

ORGANIZATION
STATE OF ILLINOIS
HON. ADLAI E. STEVENSON, Governor
, DEPARTMENT OF REGISTRATION AND EDUCATION
HON. NOBLE J. PUFFER, Director
BOARD OF NATURAL RESOURCES AND CONSERVATION
HON. NOBLE J. PUFFER, M.A., LITT.D., Chairman
W. H. NEWHOUSE, PH.D., Geology
ROGER ADAMS, PH.D., D.Sc., Chemistry
LOUIS R. HOWSON, C.E., Engineering
A. E. EMERSON, PI-I.D., Biology
LEWIS H. TIFFANY, PH.D., Forestry
GEORGE D. STODDARD, PH.D., LITT.D., LL.D., L.H.D.
President of the University of Illinois
GEOLOGICAL SURVEY DIVISION
M. M. LEIGHTON, PH.D., Chief