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DWIGHT MUNSON MOORE 
above the sea. The north slope of College Hill is much shorter 
and more abrupt than the principal south slope. 
The rocks underlying the region are indicated in the accom- 
panying diagram (fig. 1). All belong to the Waverly Series^ 
of Mississippian age^ and are grouped by geologists into two 
formations^ the Logan and Cuyahoga, each comprising several 
members. The top of College Hill is composed of a rather 
coarse sandy shale or sandstone, the Allensville member of the 
Logan formation. Beneath this, and outcropping near the west 
margin of the campus at the ^ ^Biological Book’ is the Byer sand- 
Fig. 1. Diagram Showing Geologic Structure of College Hill 
stone, a freestone which has been quarried at several places on 
the higher slopes of the hill. The Berne conglomerate beneath 
the Byer marks the division between the two formations, named 
above. It is a rather inconspicuous bed, 6 to 18 inches thick, 
composed of clean quartz pebbles in a sandy matrix. The Black 
Hand and Raccoon members of the Cuyahoga are sandstones 
interspersed with sandy shales of quite variable thickness and 
composition. 
All of these on weathering produce a rather loose and more 
or less sandy soil which is found on the greater part of the cam- 
pus. Where shales predominate, however, there is a stiff er clay 
