256 GEOLOGY OF OHIO. 
Caryaporcinal (Rig MElickonyy perce seen core eree reece eee Nutl. 
Amelanchier Canadensis (June Berry) .............0+ ssoscssee soosee one Torr and Gray. 
sculus!elabra (Buckeye) isccussmacces sen cence ncneeceeeclmeceacecelsetece Willd. 
Atsiman a itrtlobay (away) issecescctecccsncctcueacncch ceasskecrccee cee ieeeee Dunal. 
inderaBenzoinu(SpicesBush)awedccemyecctcsceedcesececeessecees Meisner. 
Populus grandidentata (Large-toothed Aspen) .............600. eee Michx. 
Celtis occidentalis (Hackberry, or Sugarberry.) This isalarge 
tree in Morrow and Delaware counties, of two feet in diam- 
GEOLOGICAL STRUCTURE. 
The geological series of the county embraces that much disputed hori- 
zon that lies near the junction of the Devonian with the Carboniferous. 
The names given to these members in the northern portion of the State 
by the Chief Geologist of the present Survey are as follows, in descending 
order. The names are not known to be applicable in the central and 
southern portions of the State, but are supposed to be: 
Cuyahoga shale and sandstone, approximate thickness... 150 feet. 
BCEAO tere ena sense on ccslierwes es f OOM: 
Bedford shale (red and blue)... if of Lop hod ans 
Cleveland shale (black)........... i i Ache ORME 
Erie shale and sandstone (gray) rf s -.- 400 “, to 500 feet. 
Huron shale (black)............... ‘ CO ecu SOO iE nea 
Of these Dr. Newberry includes the last two in the Devonian, and the 
remainder in the Lower Carboniferous. In the southern part of the 
State the series seems to be different, and names that have a general par- 
allelism with the foregoing have been applied by Prof. EH. B. Andrews, as 
follows: 
Hogan) SAaNadston er se is ahlan cece code veeelastesterentee me sneevecetcats 183% feet. 
Alternations of fine sandstone and conglomerate ............08 sens + ei) 
Coarse Waverly sandstone and conglomerate...........scesce sescesees eve 400 * 
Wiaverly (blackislateye cee teres cer LOND a ON ast re een aa eRe ere a ane Gye 
Wiaverlyishalevandsamdstome ie cicyasess-cceccssenee oieceas aie caste eeee ieee het) 
tluronishaleyor; black Slaten ee nec aren Ancanyosenaeeneananc eee eee yA) 
In the southern part of the State Prof. Andrews extends the Waverly 
group, and so the Lower Carboniferous, down to the Huron shale, em- 
bracing the interval, which is probably the equivalent of the Hrie shale 
in the northern part of the State, consistent with the limits set by the 
early geological surveys in the West, which referred the Waverly, how- 
ever, entirely to the Devonian. It has been shown, however, by Prof. A. 
