The American Geologist, Vol. XXXIV. 
Plate XVII. 
No. I. View of eastern wall of the Leyndecker quarry in Litho- 
polis. Mr. Wilkinson stands on the top of No. lo of the Lithopohs 
section and indicate<? witln lii^ Imnd the top of the Buena Vista member. 
No. 2. Sandstone layer, No. 6 of the Lithopolis section, wlucli 
makes the fall in the Leyndecker glen and is thought to represent the 
"City ledge" of southern Ohio. 
