Art. IV| Carnkv, The Scioto Illinoian f.obc. 135 



just cik'd. 1"1k' toiii^iie of the ice reached ahout six miles east- 

 ward from the main l)ody of ici-. The maximum ])osition of this 

 valle\ de])eudenc\" is marki'd 1)\' i\])ical moraiiiic tDpo^rajjhy ( his?. 

 5), with a contem])oraueous dc])ositiou of (h'ift ai^ainst the side 

 walls of the valley, which ahovc the ,ylacial debris arc veneered 

 with rock (leca\- /// situ. The line of demarkation between this 

 drift and the valley wall is slmwn very conspicuously on the 

 Haf^-erty farm southeast of the "cJiri-fuui well ( Imj^". ;>)• ddie drift, 

 judj^X'd from surface apix'arance. especially east of the Muskingum 

 County line, is rather bow ]dr\' : no very large bowlders were noted, 

 but their fewness ma\- lie accounted for by the fact that the area 

 has long been under cultivation. 



This tongue-like ex'tension of the ice maintained its distal po- 

 sition for some time, but in comparison with the duration of re- 

 treatal positions the period was proportionately brief. At the sec- 

 ond halt the alignnient of the drift suggests a tapering of the ice- 

 tongue; this form, however, is not seen in the other halts (Fig. 

 3, H. \\, 4, etc.), because of the contraction that exists in the val- 

 ley in the vicinity of Hanover. So long as the ice fed actively 

 through this narrow part it broadened some in the wider segment 

 of the valley beyond ; only in this latter area should we expect to 

 find evidence of tapering as the ice-movement weakened. 



■Moreover, it should lie noted that the distribution of the drift 

 in this valley does not conform to the pattern usually normal to 

 valleys' which encourage tongue-like extensions from the ice bor- 

 der in line with the direction of the deploying ice. The east-west 

 valle\' passing Hanover is unusual in that it has a composite his- 

 tory the most obvious feature of which, that it was formerly the 

 course of a west-flowing stream, has been published.' The con- 

 tinuity of the south wall of the valley is broken by gaps at A. B, 

 and C (Fig. -"i). representing a change in the drainage-control of 

 the region ; the presence of these openings allowed free drainage, 

 particularlv in the case of A and C, from the southern side of the 

 ice-tongue, thus removing much glacial rubbish that otherwise 

 would have remained as a lateral terrace or ridge. 



1 R. S. Tai-r. Hidlitiiis of llir (Icolntiiciil ,^i)ci<ti/ iif Aiiicnra, Vol. XVI (100.")), 



pp. i;is. 2U1. 



-■ F. I>overett. Inc. i-it.. p. 1 .">.j : W. G. Tiglit, ItulUtimi of Dcnisun Uiii fcrsiti/. 

 Vol. VIII (1894), p 4T. 



