FIELD COLUMBIAN MuSsEUM 
> , : 
PUBLICATION 53. 
GEOLOGICAL SERIES. WOE NOS: oS: 

OBSERVATIONS ON INDIANA 
‘CAVES. 
BY 
OLIVER CumMMiINGS FARRINGTON, PuH.D., 
Curator, Department of Geology. 

CHICAGO aos Lie 
February, 1901. 
