Art. I.] Clark, Drainage Modifications. 7 



and Mohican Greeks, together with another located by Profes- 

 sor Tight near Millersburg on Kilbuck Creek, the hydrographic 

 basin of the Walhonding would be completely rock bound ex- 

 cept at the point where it opens into the valley of the Muskin- 

 gum at Coshocton. Our only possible conclusion, therefore, is 

 that the pre-glacial Walhonding must have emptied its waters 

 into the Old Newark River at the point where it now empties 

 into the Muskingum. 



The filling of the Walhonding Valley has probably resulted 

 from both stream deposition and glacial advance up the valley. 

 Exposures in the upper part of the valley where the Toledo 

 and Walhonding Valley R. R. has cut through the terraces 

 show very distinct shingling. But down at Warsaw, there is a 

 dam some 25 or 30 feet high and a few hundred feet broad 

 which almost completely fills the mouth of Beaver Run. I was 

 able to find no very new exposures along this dam at the time 

 of my visit and could discover no evidences either of shingling 

 or of heterogeneous deposition. A plan of the fill did not seem 

 to me to present a sufficiently rounded outline to have been de- 

 posited from an eddy, which from its position out of the main 

 current is the only way in which it could have been deposited 

 by water. Its relatively straight contours on both the up and 

 down stream sides indicate that it may be a lateral moraine from 

 a tongue of ice pushed up the valley. And its pebbles and 

 boulders are glacier-worn. 



Kilbuck Creek, which empties about two miles below 

 Warsaw, is the Walhonding's chief tributary. As one looks into 

 it on coming up the latter stream it presents a wide open valley 

 comparable in size with that of the Walhonding itself. The 

 lower portion of the stream has not been carefully studied in 

 this connection but reference has already been made to the 

 fact of Professor Tight's having located an eroded col near Mil- 

 lersburg. This old col was but a few miles North of the Coshocton 

 County line, hence the Old Kilbuck and W^alhonding Creeks 

 must have drained approximately equal areas. This readily 

 explains the nearly equal sizes of their valleys, while the in 

 creased volume of water now coming in from Owl and Mohican 



