WISCONSIN GEOLOGICAL AND NATURAL HISTORY
SURVEY.
COMMISSIONERS.
30BERT M. LA FOLLETTE,
Governor of the State.
1. D. HARVEY, VIcE PRESIDENT,
State Superintendent of Public Instruction.
OHARLES K. ADAMS,
President of the University of Wisconsin.
EDWIN E. BRYANT, PRESIDENT,
President of the Commissioners of Fisheries.
CHARLES S. SLICHTER, SECRETARY,
President of the Wisconsin Academy of Sciences,
Arts, and Letters.
STAFF OF THE SURVEY:
E. A. BIRGE, Ph. D., Sc. D.,
Director and Superintendent.
E. R. BUCKLEY, Ph. D.,
Assistant Superintendent. Economic Geology.
SAMUEL WEIDMAN, Ph. D.,
Assistant Geologist.  Geology of Central Wis.
consin.
W. S. FERRIS, B. S.,
Assistant Chemist.
CHANCEY JUDAY, A. M.,
Assistant Biologist.
U. S. GRANT, Ph. D.,
Assistant Geologist. Professor of Geology, North.
western University. In Charge of Survey of
Copper-bearing Rocks.
N. M. FENNEMAN, M. S.,
Assistant Geologist. Physical Geography of the
Lake District.
CONSULTING GEOLOGISTS.
C. R. VAN HISE, Ph. D.,
General Geology.
T. C. CHAMBERLIN, Ph. D., LL. D.,
Pleistocene Geology.