346 The American Geologist. December. i904. 
and one-half feet of which is shown but neither the top nor 
bottom. 
The large stream which heads on the Fairfield-Pickaway 
line about one and three-fourths miles south of the Franklin- 
Pickaway- Fairfield corner and flows nearly west through a nar- 
row ravine affords exposures of nearly all the Bedford forma- 
tion. The shale usually rises only a few feet in the banks of 
the streami of which it often forms a clean cut bed : in places, 
however, it forms banks fifteen or twenty feet in height. The 
shale is invariably red, sometimes mottled with grayish-blue 
and may contain concretions of considerable size.. The soil in 
places at some distance from the stream is reddish in color and 
contains fragments of the red shale. In this locality, therefore, 
the drift cover over the divides is apparently not deep. The 
upper part of the Bedford in this area is usually red and not 
mottled or grayish as to the east and northeast of Columbus. 
The stream to the north of the one just described afifords very 
good exposures of Bedford shale of similar lithologic appear- 
ance. 
Section Norfhzccst of Marcy 
One-half mile north of Marcy post-office is the source of 
a stream flowing west and northwest, receiving as eastern 
tributaries the small streams just mentioned, and emptying into 
Little Walnut creek two and one-half miles north of St. Paul.. 
Pickaway county. The upper course of this stream is through 
a narrow glen cut in the Cuyahoga, Sunbury and Berea forma- 
tions on the farm of J. INI. Hensel. The following section is 
shown on this stream : 
Total 
No. Thickness, thickness. 
5. Cuyahoga formation. Blue, fine-grained sand- 25'+ 663^' 
stones with some intercalated soft gray shale 
which contains very httle grit. At the base 
are thin bedded sandstones with shales and 
shaly sandstones, above which are shales con- 
taining concretions. 
4. Gray argillaceous shale which is ver>- soft and 8^' 41 /^' 
gritless, with the exception of a 6 inch com- 
pact gray sandstone the base of which is 3 
feet 2 inches above the base of the shale. This 
zone is well shown on the northern bank of 
