128 Bulletin of Laboratones of Demson University. [Voi. xiii 



Knight a well (No. 2 in Plate 4), standing about 50 feet east of 

 the cliff, which reaches rock after passing through 81 feet of 

 aggraded materials. It is evident that the rock wall here drops 

 off rather sharply, a repetition of the gorge characteristics illus- 

 trated in the cross-sections of Plate 3. 



At the second house south of well No. 2, Mr. McKnight 

 has driven another well which reaches rock at 78 feet; this well, 

 marked No. 3 on Plate 4, stands a few rods farther west than 

 does No. 2. On the next highway east is well No. 4, nearly 

 in an east-west line with No. 3, on the property of H. S. Mont- 

 gomery. After going through 129 feet of gravel, sand, and 

 clay this well reaches rock. 



The curb of No. 2 is 65 feet below the crest of the drift to 

 the east; that of No. 3 is 35 feet below, while No. 4 stands 

 about 18 feet lower than the top of the drift. Plate 4 gives a 

 cross-section of the valley passing through wells 3 and 4, show- 

 ing the probable outline of the valley floor. The great mass 

 of drift here shown is a continuation of Leverett's Hanover Dam. ^ 

 In the valley included in the region of these wells, stream ero- 

 sion has exposed in the drift a measurable thickness of 90 feet ; 

 this depth with the record of No. 4 gives the drift an establish- 

 ed thickness of 147 feet. But the drift here is presumably 

 much thicker since it occupies a valley the rock walls of which, 

 at this point 240 rods apart, flare southward into a wider valley, 

 an old drainage line which Tight", in his work on restored 

 drainage, connects with the Scioto basin. 



We have here, then, an obvious instance of drainage re- 



'U. S. Geol. Surv., Monograph xli, p. 260, and p. 2S6. 



^Bull. Sci. Lab. Denison Univ., vol. viii., part II, p. 47. 



Speaking of the old east-west valley Tight says, on page 43 : "The line of 



Waverly hills , which form the northern wall of 



this broad valley, , can be traced as an unbroken ridge to 



the east It is divided north of Hanover by Rock P'ork 



Creek and north of Frazersburg by Wakalomaka Creek, both small streams with 

 narrow V shaped valleys." No mention is made of the broad buried valley from 

 Perryton coming into "this pre-Glacial stream, for which the name Newark Riv- 

 er is suggested." (This last quotation is also from Tight, Professional Paper, 

 No. 13, U. S. G. S.. p. 18.) 



