Art. iii.j Carney, Geology of Pory Township. 125 



evidence points to the existence of a tongue of ice extending 

 from the vicinity of Hanover northward, reaching possibly a 

 mile into Perry township. Furthermore there is evidence of 

 one, and possibly two halts of this ice-tongue. 



DRAINAGE. 



Since drainage problems are seldom localized, little can be 

 accomplished in considering the drainage of a restricted area. 

 But in this region of about 25 square miles we find one or two 

 points that will be of use in investigations including adjacent 

 territory. 



The major stream of the township, the Wakatomaka, rises 

 in the drift just considered ; its headward work is slight save that 

 accomplished through heavy rains and at flood seasons. At 

 two places only is it on or near rock (Plates 3 and 4). It occu- 

 pies a valley cut down possibly into the Cuyahoga ; this valley 

 is irregular in width ; for about a mile either way from Perryton 

 it is very mature, being constantly a mile and sometimes one 

 and a half miles wide. Northeast of Perryton the valley, swing- 

 ing into Muskingum county, narrows. Near the county line 

 this branch of the Wakatomaka joins another arm which rises 

 near Bladensburg, Knox Co. The Wakatomaka is a tributary 

 of the Muskingum river, uniting with it at Dresden. 



From the north the Perry township arm of the Wakatom- 

 aka receives several tributaries ; the largest of these flows from 

 the central part of Fallsburg township, another rises north of 

 Reform. Both the major stream and these tributaries have 

 flood-plains, and present other evidences of an advanced stage 

 in the erosion cycle. 



Plate 3 gives a detail of drainage about one mile south of 

 Reform. The Black Hand cliffs exposed attain a maximum 

 height of 32 feet ; we have here the coarse conglomerate phase 

 of the formation. From all evidence available these cliffs, pro- 

 duced by steam work, weather slowly. North of the highway 

 on the east, the patched appearance of this outcrop is due in 

 part to talus from the overlymg Logan ; while the two isolated 



