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dry passage of Shawnee cave, Lawrence County, revealed a multitude of 
bat bones scattered through this earth, a fact that seems to confirm this 
theory. 
In conclusion it may be stated that local causes may and often do 
exist that affect the formation of a particular cave and that are dia- 
metrically opposed to the factors enumerated above, so that no set of rules 
or conditions can be formulated for determining the formation of a cave 
or explaining its formation. 
