ILLUSTRATIONS. 
Page. 
Plate J. Sections in Indiana and Kentucky near Louisville 1<"» 
1 1 . Sections in Virginia and West Virginia 28 
111. .1, Lowest limestone of Franklindale beds, part of Gulf Brook sec- 
tion, Pennsylvania; B, Oswayo (Pocono) formation, zone 12 of 
South Mountain section, Pennsylvania 96 
i V. Sections in Bradford and Tioga counties, Pa 130 
Fn;. 1 . Section on Brooks Run, Bullitt County, Ky 20 
2. Section south of Huber, Ky 21 
.'!. Sections in Virginia and West Virginia 43 
5 
