Ill 



Fig. IJl. Month »( W.ynndotto cave, o forniur localion of an nndorgrouncl 

 stream. 



Fig. 82. ()1(1 opening to one oi' tlir large s|ii-ings draining t)ie Strongs cave 

 sinlvs four miles west of Bloomington. 



Figures 6, 7, S, 10, 12, 13, 14, 17, 19, 21, 29, 80, 81, 82, from I'rofe.ssor 

 Cuming's negatives. 



