12 Bulletin of Laboratories of Denison University . [Voi. xii 



crevices) and the place has local reputation under the name 

 "Falling Rocks." Just over the ridge to the East, in the mid- 

 dle one of the 'three parallel valleys coming down from the 

 northern part of the county, there is a similar, though less 

 striking, gorge. In a tributary to this gorge is an overhanging 

 rock which has received the title of "Raining Rock," given 

 because of the continual dripping of water from nearly the 

 whole of its under surface. The easternmost of the three 

 valleys has no such escarpments as these that have been men- 

 tioned, but its hill sides are dotted with huge boulders of the 

 same sort of country rock, viz., Logan conglomerate. It was 

 at first assumed that these two gorges represent the locations of 

 old cols. From map study Professor Tight questioned very 

 seriously the possibility of there ever having been cols at these 

 places, but after going over the ground with me he admitted 

 that my inferences seemed tenable. If these were old cols of 

 course the valleys above them must have had outlets in some 

 other direction, most probably to the West or Northwest. 

 Thorough examination of the whole basin revealed the fact that 

 it is completely rock bound, the only gaps anywhere near deep 

 enough to have drained the old valleys-being at the two points 

 already discussed and at whatever point the present stream 

 comes into the basin of this old system from the Northwest. 

 After a more careful and thorough examination at Falling 

 Rocks it was found that if the old valley were restored at that 

 place so as to leave no rock escarpment visible, that point 

 would still mark the lowest outlet to this section of the valley. 

 And the same was found to be true for the gorge on the Raining 

 Rock tributary. The only way left to account for the gorge-like 

 character at there points is the fact that the outcrop of the con- 

 glomerate here is much harder and more resistant than else- 

 where along these streams. 



The same difficulty was experienced on Rocky Fork as on 

 the Wakatomaka in locating the exact position of the old col. 

 Two or three miles above Falling Rocks the valley becomes 

 narrow and gorge-like (without, however, any very prominent 

 escarpments) and there may have been a col across any one of 



