32 
BULLETIN OF THE LABORATORIES 
Falls, 8o feet below the carboniferous conglomerate to that layer, we 
find a series of shales, &c., generally unfossiliferous, but containing 
two horizons, from which many species have been obtained. The first 
horizon, from which over thirty-five species have been figured in Bulle- 
tin Vol. IV, of Denison University, is forty feet below the carboniferous 
conglomerate, the second is exposed in the series of shales and free- 
stones of which the stratum forming the Big Falls is the top. Alloris- 
7 na Cuyahoga and a species of Chonetes are the only species thus far 
obtained from that horizon. These zones are probably equivalent to 
divisions II and III of Licking County. We have seen that the 
Waverly shale, disappears at Shade Creek, north of Wooster, and con- 
sequently we should not expect to see it here. The concretionary zone 
(I4) has lost its lithological character here and has probably thinned 
out. fudging from the relative position it holds at Richfield its horizon 
would be under the Big Falls, More collecting will have to be done 
before anything definite, can be said as to its position here. The Berea 
shale, which extends almost to the Big Falls, is very different, both 
lithologically and palaeontologically from the Cuyahoga shale proper. 
Five species have been obtained in this portion of the series, which 
are illustrated in Volume IV, Bulletin of Denison University, Plate 
X, Figs. 29, 30, 31, 32, 33. It will be seen by referring to that plate, 
that the portion above the falls has nothing in common with this shale, 
which is equivalent to a portion of division I3. The Berea grit and 
Bedford shale are respectively equivalent to I2 and Ii of Licking 
County. 
