22 Bulletin 12 150 



The specimens from stations 20A and 20B are from clays which 

 have been produced by the weathering of the JefFersonville lime- 

 stone and the Sellersburg beds, and hence are representative of 

 both formations. 



Station 20C. — Three and one-half miles east of Charlestown. 



The following fauna was collecfted at the roadside: 



Atrypa reticularis r, Bzicauia d'evonica c, Chonetes miicronatics c, 

 Chonetes ya?idellanus c, Conocardium trigoriale r, Discina g7''andis 

 r, Glyptodesma occidentale , Orthis iowensis c, PoIyp07^a sp., Proetus 

 sp. r, Spirifer acuminatjis c, Spirifer byrnesiv, Spirifer gregariiis 

 a, Stropheodonta demissa c, Stropheodonta heniispherica c, Strophe- 

 odonta perplana c. 



The following species from Charlestown, Indiana, are in the 

 State Museum: 



Atrypa aspera, Camarotcechia tethys, Chonetes yandellanus, Cyr- 

 tina haniiltonensis Hall, Meristella nasuta, Orbiadoidea ampla 

 Hall, Orbiadoidea seneca Hall, Schizophoria propinqua f, Spirifer 

 consobrinus d'Orbig, Spirifer e^irtdeines, Spirifer granulosus Hall, 

 Spirifer penjiatus Atwater, Stropheodonta demissa Hall, Stropheo- 

 donta hemispherica H. 



Station 20 A. — East of Charlestown, near Fourteen creek. 



The following species were picked up from the residual clay at 

 the roadside: 



Bucarda devonica, Microdiscus sp. c, Spirifer acuininatus a, 

 Spirifer ejir^iteines r, Spirifer gregarius a, Stropheodonta de- 

 missa r. 



Station 20B. — Three miles east of Charlestown in an old field. 



Ohio Falls and Kdwardsville Section. 



The Niagara limestones which are so well exposed just east of 

 Louisville are brought below the bed of the Ohio at the Falls by 

 the westerly dip of the beds, which is probably 25' or 30' to the 

 mile. 



The Devonian beds are well exposed along the north bank of 

 the Ohio almost to the mouth of Silver creek, where their out- 

 crops are succeeded by those of the New Albany shale. At New 



