112 



Prof. J. Prestwich. 



II 



Name of place. 



Ill 



Nature of the strata. 



IY 



Depth of 

 well or 

 boring. 



India. 



Pondicherry 



Manegaon , . . . 



Africa.^. 



Algeria, Baraki 



„ Messis 



Grhadame, Tripoli 



Sahara Desert (mean of 

 several wells) 



North America. 

 Charleston, S. Carolina . . . 



Columbus, Ohio 



Louisville, Kentucky 



St. Louis 



Chicago § 



Bothwell, Ontario 



Sheboyan, Wisconsin 



La Fayette, Indiana 



South America. 

 Buenos Ay res 



Alluvial Beds . 

 Coal-measures. 



Marls and Grravels 



Tertiary Strata ? 



? 



Tertiary Marls and Grravels. 



Eocene Strata, 708 feet, overlying 398 

 feet of Cretaceous Strata 



Upper Devonian Sandstones and Shales . 



Upper Silurian Limestones and Sand- 

 stones 



Lower Carboniferous Shales (429) feet. . 



Sandstone (360 ft.), Limestones (2725 ft.) 



Upper Silurian Limestone and Sand- 

 stone , ♦ 



Corniferous Limestone (Devonian) .... 



St. Peter's Sandstone (Lower Silurian).. 



p 



Pampean Beds 



