OF DENISON UNIVERSITY. 
71 
cinnati groups are shown in the same section, and the thickness of the 
Clinton Group as here obtained is strictly accurate. 
A' BCD E FG HIJ 
Stations. 
Top of Clinton Group. 
1 Base of Clinton Group. 
Stations. 
Distances. 
Height above Court 
House Corner. 
Dip for 100 feet. 
Distances. 
Height above Cotni 
House Corner. 
Dip for 100 feet. 
A __ 
150 
208 95 
I 00 
.67 
G 
B 
30 
198.94 
■'"2. 08 
■■■‘6.93 
I 
C — 
35 
201.02 
3-44 
9 - 8.3 
D 
75 
207.95 
138 
1.84 
75 
197-58 
1. 17 
1.56 
E __ 
75 
206.57 
2.46 
3.28 
75 
196.41 
2 70 
3.60 
F __ 
150 
204. 1 1 
3 19 
2. 16 
150 
193 71 
5-54 
3-69 
H__ 
75 
200.92 
4-54 
6.05 

188.17 
T 
196.38 
j 
J 
Seam in Clinton. 
i 
|e 
Ip in feet. 
0 
0 
V 
>7.^ 
i 
198 08 
194.79 
3-29 
1.88 
*Dip towards the west. 
' A section of the eastern half of the quarry, beginning at A near 
Massachusetts Avenue, and extending to the eastern limit, is repre- 
sented by the table and section just given. The distances are 
reckoned to the next succeeding station on the line ; the height is cal- 
culated from the level of the side walk at the Dayton Court House; the 
first list of dips consists merely of differences of elevation between 
consecutive stations ; in the second these are reduced to the standard 
of 100 feet. The dip unless marked by an * is toward the east. 
The difference in direction between the base and the top of the 
Clinton Group is quite evident, and is owing to the effects of glacial 
action which has planed off the stone without regard to its dip, or ele- 
vation, as shown for instance at station C. This is still more evident 
if the dip near the western end of the section be considered, where the 
base of the Clinton is 4 ft. below the same 40 feet north. The entire 
eastern half of the quarry shows glacial scratching, planing, and 
grooving. 
