30 
BULLETIN OF THE LABORATORIES 
conglomerate II, which has thinned out, is approximately indicated by 
the presence of Allorisma wincheUi. 
White sandstone. 
Blue shale, 
j Sandstone, 
( Sandstone, 
Concretionary zone. 
- 20 ft. 
35 ft- 
-^O ft. 
lO ft. 
IIl2. 
1II2. 
IIl2. 
III. 
4 - 
Ascending the Killbuck a short distance we find along Shade 
Creek, which empties into the Killbuck from the west the above sec- 
tion. About twenty feet of white sandstone containing Schizodus new- 
arkensis ? and an undetermined species of Orthis forms the top of the 
section. The blue shale underlying it, is better exposed here than in the 
section last mentioned and contains numerous fucoids. The thirty 
feet of sandstone overlying the concretionary zone contains 
Productus semireticulatus (which only occurs in III and I II 2 in Central 
Ohio.) Whether these flags belong to Hr or III 2 , is doubtful, as no 
line -can be drawn between them on any organic evidence. It seems 
probable, however, that the lower portion belongs to II i, as fossils 
occupying that height occur farther north. The Waverly shale has 
thinned out at this locality. The concretionary zone is represented 
by Syriopecten nodocostatus^ Chonetes tumidas and Pterinopecten cari- 
niferus. About one mile from where Shade Creek empties into the 
Killbuck, and four and one-half miles south of Burbank, in a ditch 
by the road side, Spirifer biplicatus and Productus duplicostatus were 
found, both of these species occur in the middle part of division III 
in Licking County, as they are found on the same altitude as the upper 
part of the sandstone overlying the concretionary zone in Shade Creek, 
it would seem to indicate that the upper part belongs to that period. 
The lithological features are however entirely different from the flags at 
Shade Creek, and resemble the exposure at Burbank, Ohio. Two 
miles south of Burbank and a little below the last exposure, Sanguiu- 
(dites naiadiformis and Edmondia tapesiformis were found. The 
former species occurs in II i, in Licking County, while the second was 
described by Meek, from Richfield, Summit County, it has not been 
found in Central Ohio. On the Killbuck, a short distance southwest 
of Burbank, occurs the Cuyahoga shale of the Ohio geologists. This 
horizon would include the stratum last mentioned. At Burbank, Spir- 
ifer biplicatus^ Productus newberryi and Hemipronites ceiiistria are the 
