Stockdale: StyloUtes 39 



Fig. 11. — Diagrammatic sketch of the large, perfectly formed 

 stylolites of the Salem limestone, such as are found in the 

 Dark Hollow district, Lawrence County, Ind. In this speci- 

 men the block has been broken along the side-surfaces of 

 the upward-penetrating columns, showing the striations; 

 and thru the downward-pointing columns, exposing the 

 lamination and texture of the rock. One-fourth natural 

 size. 



Fig. 12. — Thirteen-inch stylolite in the buff Salem limestone. 

 From a quarry of the Consolidated Stone Company, Dark 

 Hollow district, Lawrence County, Ind. 



