39 



Over this area the exposed rocks are composed of a series of bluish, thin- 

 bedded limestones intercalated with blnish-green limey shales, while at 

 the top are massive sandy limestone beds of a brownish color The shales 

 are soft, easily weathered and very fossiliferons. while the bluisli lime- 



UDIANA 



0.1 I K e L l .5 t o\ 



L 11/ f ■< ti"! ( TJ T i a. TV T'i TO 5 . 



stones are in places largely composed of fossils. As a part of an island, 

 therefore, upheaved from the Ordovician seas, was the first born land of 

 Indiana; and to that little corner all other portions of our noble State 

 were added in their turn by the workings of nature's forces during after 

 ages. 



