154 
The Ohio Naturalist. 
[Vol. IV, No. 7 , 
contracted to a width of 40 or 50 yards only and flows on a rock 
floor between rock walls. After emerging from this gorge, it 
turns to the south into a broad vallej’ in which it continues to 
Clear Creek. One would naturally suppo.se that this was the site 
of an old col, but if the observer takes the trouble to climb tlie 
hill to the west of this narrow channel, he will find that it is of 
drift and stands directly across the valley, forcing the stream 
against the east wall to such an extent that it has cut a channel 
in the rock at that point. This drift dam is 75 to 100 feet or 
more in height and composed of roughly stratified gravel, a well 
sunk on its summit about the middle of the valley having gone to 
a depth of 100 feet with no rock. Below this dam the vallev 
widens out but drift deposits have forced the stream at almost all 
points to the eastern wall. 
j. Old col oil Arney Creek at “Jacob's Ladder.’’ 
There can be little doubt that the headwaters of this stream 
formerly ilrained into Clear Creek by the valle}' extending to 
Amanda, and that the ice has forced it over a col into the presmt 
system. The col was probably very low and possibly did not ri-e 
far, if at all, above the present floor. It is difficult to locate, but 
from the direction of tributary streams and the general contour 
of the valley, it would .seem that it was probably less than a mile 
below the point where Mudd}' Prairie Creek enters the hills. 
Arney Creek rises on the eastern side of a low divide at Ham- 
burg and flows northeast toward Lancaster. For a distance of 
