OF DENISON UNIVERSITY. 43 



on the north side there is a rock cliff i 50 feet high. This is the 

 narrowest place in the valley between Toboso and Zanesville, 

 but below this evident ancient col the valley of the Licking is 

 still very narrow. At Dillon's Falls, as well as at Toboso, the 

 river' is running on a rocky floor. It is barely possible that at 

 the Falls there may be a deeper valley to one side, but a rather 

 hasty examination revealed no evidence of such a channel. 



These considerations make it very evident that the present 

 Licking river could not have been the line of drainage for the 

 ancient basin at Newark, but must be considered as postglacial. 



4. Evidence of a Buried Channel North of the Present 



Licking River. 



The great width of that portion of the Licking valley im- 

 mediately east of Newark and the suddenness with which the 

 river leaves this open valley is very suggestive as to its eastern 

 continuation. 



The line of Waverly hills capped with carboniferous sand- 

 stone, which form the northern wall of this broad valley, and 

 over which the drift accumulations which fill that portion of the val- 

 ley were evidently poured, can be traced as an unbroken ridge to 

 the east along the line indicated by the heavy dotted line in Plate 

 IV. It is divided north of Hanover by Rocky Fork Creek and 

 north of Frazersburg by Wakalomaka Creek, both small streams 

 with narrow V shaped valleys. Where Rocky Fork breaks 

 through this line of hills it emerges onto a great plain which ex- 

 tends unbroken, but gradually ascending, in the direction of 

 Newark, After crossing this plain it enters a narrow gorge at 

 Hanover which it traverses for about one half mile and then 

 emerges onto the flood plain of the Licking River. On the east 

 side of the stream between the hills on the north and the Hanover 

 gorge, there is a great drift accumulation, Plate IV, D, which 

 presents a steep front to the west and rises 150 teet above the 

 stream or 971 feet A. T. To the east of D the drift is not quite 

 so high for a short distance and then about midway between D 



