216 L. BE. Hicks— Waverly Group in Centrai Ohio. 
Art. XXII.—The Waverly Group in Central Ohio; by L. E. 
Hicks, Professor of Natural Sciences in Denison University. 
In this paper I propose to enumerate and describe the strata 
lying between the Huron Shales (Devonian) and the base of 
the Coal Measures, and to consider briefly their stratigraphical 
relations. I shall use names derived from localities in Licking 
and Delaware Counties—not that I wish to add to the already 
profuse nomenclature of this group, but as a matter of neces- 
sity until the application of the names proposed by other geol- 
ogists has been definitely settled. The section contains five 
well defined members, named below in descending order. 
Oc Lie SOelee cs 100 to 150 feet thick. 
4. Black Hand Conglomerate and 
Granville Beds 85 “ 90 - 
3. Raedoon Shales... ois occ oe 300 * 
2. Sunbury Black Slate...-...... 10 
1. Sunbury Calciferous Sandrock.. 909 “100 “ 
oc 15 i? 
which the Coal Conglomerate and Massillon Sandstone produce 
the most conspicuous effects in the landscape. At or near the 
top of No. 5 there is usually a stratum of compact, fine-grained, 
drab sandstone, which is quarried to some extent, having 4 
thickness of three to ten feet. Below this are friable, earthy, 
gray or olive shales; and at the bottom, comprising about one- 
third of the whole, shaly drab sandstones. These, and the 
compact sandstone at the top, are fossiliferous. Spirifera Car- 
teri, Aviculopecten Winchelli, Allorisma pleuropistha, and other 
characteristic species of the Ohio Subcarboniferous, bave been 
obtained from this horizon. 
Wherever the Coal Measures Conglomerate exists it forms 
requently the sandstone is overlaid by shales differing scarcely 
at all from those below it. The lower limit, however, is pet 
fectly defined by the upper surface of the next stratum, which 
is one of the most distinctive and well-marked of the whole 
group. 
