TEN INDIANA CAVES. 



109 



this branch the main cave ends in a small crescent- 

 shaped room, in the farther end of which, 750 feet 

 from the entrance, is a deep crevice in the floor, filled 

 with water of exceeding clearness. This pool of 

 water was four feet wide and appeared but three or 

 four feet deep, but actual 

 measurement showed it to 

 be nine feet, three inches 

 in depth. The length of 

 the pool could not be de- 

 termined, but it extended 

 down a branch passage to 

 the right, covering all the 

 floor thereof as far as one 

 could see. 

 For two or 

 three feet 

 ab o ve the 

 water-line 

 the walls of 

 this room are 

 covered with 

 s m a 1 1 but. 

 most beauti- 

 ful crystals 

 of c al cite, 



which reflected the light of our candles in a most 

 brilliant manner. Numerous small stalactites of the 

 clearest crystal stud the walls and project from the 

 crevices of the roof, while the floor is largely com- 

 posed of calcite, derived from the overflow and subse- 

 quent evaporation of the water from the pool. This 



1. Right-hand passage. 



2. Left-hand passage. 



3. Cleft in floor. 



4. Lower passage. 



5. Blue pool. 



orCoon CAVE. 



Monroe County, Ind. 



Fig. 25. 



