154 



The Ohio Naturalist. 



[Vol. IV, No. 



contracted to a width of 40 or 50 3'ards only and flows on a rock 

 floor between rock walls. After emerging from this gorge, it 

 turns to the south into a broad valle}- in which it continues to 

 Clear Creek. One would naturalh- suppose that this was the site 

 of an old col, but if the observer takes the trouble to climb the 

 hill to the west of this narrow channel, he will find that it is of 

 drift and stands direct h' 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 roughh^ 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 valley 

 widens out but drift deposits have forced the stream at almost all 

 points to the eastern wall. 



Fig. J. Olil col oil Arney Creek at "Jacob's Ladder." 



There can be little doubt that the headwaters of this stream 

 formerly drained into Clear Creek by the valley extending to 

 Amanda, and that the ice has forced it over a col into the prestnt 

 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 Muddy 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 



