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Indiana University Studies 

















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Fig. 1. — Stylolites in the Muschelkalk, showing striated side- 

 surfaces and clay caps. From Riidersdorf, near Berlin. 

 Original in Marburg Museum. (From Kayser's Lehrbuch 

 der Geologie.) 



Fig. 2. — Large, perfectly formed stylolites of the Salem lime- 

 stone. Note the slickensided side-surfaces and the clay 

 caps of the columns. One-sixth natural size. From a 

 quarry of the Consolidated Stone Company, Dark Hollow 

 district, Lawrence County, Ind. 



