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The Ohio Journal of Science [Vol. XVI, No. 6, 



Crystal Chamber, Figure 2. It occurs on the walls and roof 

 of the cave at many places, resembling a structure of organic 

 origin, though that does not seem possible. No explanation 

 is offered. In Figure 2 stalactites of iron oxide, the darker 



Figure 3. "Evangeline and Gabriel." 



columns in the inner part of the recess, and calcite, the lighter 

 columns, shows the close association of these two minerals. 

 The change in the diameter near the middle of the column 

 at the left in the same illustration, is characteristic of many 



