242 G. D. Hubbard — Ancient Finger Lakes in Ohio. 



just at the crest of the bluff, aud 940-960 feet above sea level, 

 occur sand aud gravel, usually in small quantities but specially 

 marked where the little runs descend. These are taken to be 

 ancient shore lines. This lake basin, like the first, has its outlet 

 to the south and hence may have disappeared before the glacier 

 did. It certainly would only persist until the outlet could be 

 cut through the retaining moraine. 



The soil survey* working in the Wooster area recognized the 

 clay and silt deposits in this valley, also in the first one de- 



Bh) Pmirit 



scribed, and found rather extensive peat deposits in places on 

 these lake bottoms. Ancient lakes are located by that survey 

 where peat occurs but apparently are not recognized where 

 the clays and silts are laid. 



The bed of the fourth finger lake has been called the Lake- 

 ville plain. It may be entered at its south end about a mile 

 northeast of Big Prairie station in southwestern Wayne county, 

 where it has been effectually closed by the building of big 

 morainic loops. Rock walls shut in the sides of the basin, and 



* Bureau of Soils, Field Operations 1904. 

 562. 



Wooster Map and text, pp. 548- 



