346 GLACIAL FORMATIONS OF ERIE AND OHIO BASINS. 



pretation of the direction in which the CUnton limestone of the "Betty 

 Heid}^ " quarry was transported. 



Welch has found many Devonian fossils in the drift near Wilmington, 

 which accord with the sti^ia? and the Wisconsin moraines in indicating a 

 southwestward movement of the ice sheet, for tlie principal outcrops of 

 Devonian strata are to the northeast. 



Wells in Wilmington also strike a bed containing molluscan shells 

 beneath about 25 feet of till and above the hard till of the Illinoian drift. 

 They were probably in the white clay referred to the lowan stage. Welch 

 collected a considerable number of these shells, which await identification, 

 though they seem to be largely Succinea avara. He also examined expo- 

 sures of the buried soils and found seeds of Sagittarius and the bulrush of 

 northern ponds; also pieces of wood, one of which shows beaver cuttings; 

 and another was thought by him to show evidence of charring by fire. Of 

 these specimens the writer has seen the first-named piece of wood and the 

 collection of shells from below the till. The wood appears to be cedar. 

 The shells are all minute, being scarcely one-eighth inch in diameter, and 

 were in their origiiial matrix of fine silt. 



In Greene County there are few deep wells along the moraine, water 

 being usually found at 20 feet or less. The following records of deep 

 wells are the only ones obtained. 



At C. W. McDonald's, on the Xenia and Wilmington pike, about 

 2 miles south of Xenia, a well 52 feet in depth does not reach rock. It 

 was thought hy Mr. McDonald to be mainly through till. At a school- 

 house about 1^ miles southwest of Paintersville, on the plain east of the 

 moraine, a well was dug which has the following section, as reported by 

 D. H. Oglesbee, who assisted in digging it: 



Section, of schoolhouse well near Paintersville^ Ohio. 



Feet. 



1. Yellow till - - - - 8-10 



2. Blue till - - - - -iO 



3. Dry sand - 10-12 



4. Hard, dry clay of bluish color, penetrated 20 



The well was abandoned at about 80 feet. Another well made subse- 

 quently at the same schoolhouse obtained water at 125 feet, which over- 

 flows, but the writer was unable to obtain a detailed section. Oglesbee is 

 of the opinion that it did not reach the bottom of the drift. 



