28 bulletin ' dF THE LABORATORIES 
erate I is sufficient to indicate its presence. The nodule layer is well 
exposed here .and is rather fossiliferous, at the same time, some of its 
species which are characteristic of that horizon in Licking County, do 
not occur here, and vice versa. It may be well to illustrate this point 
more clearly. At Moots’ Run the characteristic species are Spirifer 
marionensis ^ Phillip sia prcRcursor^ Strehlopteria fragilis and Pterinopecten 
cariniferus^ in Ashland County, Hanover Township. Phillipsia proicur- 
sor and several other more uncommon forms have disappeared and 
some new species have taken their place, as Pierinopeden ashlandensis, 
and Leiorhynchus ? richlandensis, while Hemipronites cenistria and Spirit 
fer ? temiispinalis^ which are scarce at Moots’ Run, are very abundant 
here. The concretionary zone is about 250 feet below the Carbon- 
iferous conglomerate in Licking County, while in Ashland County it 
is only 200 feet. At Wooster, Ohio, the following section was ob- 
tained along Christmas Run and in Reddigs Quarry, immediately 
north of the city. 
Dark sandstone, 
Conglomerate II, 
Freestone, 
Conglomerate I, 
Shales, &c.. 
Concretionary shale. 
15 
ft 
III2 
18 
in. 
40 
ft. 
Hi. 
I 
ft. 
30 
ft. 
I5. 
30 
ft. 
I4. 
The strata lying on top of conglomerate II are not very well 
exposed, but one species i^Discina maguifica) which occurs in IIIi, in 
Hanover township, is found immediately over conglomerate Hi. It 
would be impossible to draw any line between HIi, and III2, so that 
the former will be considered a part of HI2. The top of division two 
or II2, which is exposed in .Ashland county, has no equivalent here, 
and Hi is sparingly fossiliferous. Lyringotheris cdrtcri, which is so 
abundant farther south, was not found at this place. The nodule layer 
can be very easily correlated with its equivalent in Ashland County, 
but bears the same relation to that outcrop as exists between the first 
two exposures mentioned. Our collections seem to indicate that 
Pterinopecten ashlandensis and Aihyris ashlandensis have disappeared, 
while Ptei'inopecten cariniferus and Lyriopecten nodocostatus are very 
rare. Spiriier maiionensis, Mytilarca fibristriatus^ and Poisidoniya 
