BOUNDARY OF TEE GLACIATED AREA. 169 



county, the accumulations of glaciated material are upon a 

 scale equal to anything upon Cape Cod. The northern part 

 of Holmes county is covered with till, which is everywhere 

 of great depth, and in numerous places near the margin dis- 

 plays, though in a moderate degree, the familiar inequalities 

 of the New England moraine. After the southern deflec- 

 tion in Knox county, the glaciated region is entered near 

 Danville, from the east, on the Columbus, Mount Vernon, 

 and Akron Railroad, through a cut in till a quarter of a 

 mile long, and from thirty to forty feet in depth. At the 

 old village of Danville, near by, upon a neighboring hill, 

 wells are reported as descending more than a hundred feet 

 before reaching the bottom of the till. Through Licking 

 county, both north and south of Newark, the depth of the 

 glacial envelope is great up to a short distance of its east- 

 ern edge. At the old canal reservoir, in Perry county, the 

 characteristic features of a moraine come clearly out. The 

 hill just to the south of this, on which Thornville is built, is 

 a glacial deposit in which wells descend from thirty to fifty 

 feet without striking rock. This is upon the highest land 

 in the vicinity. The reservoir itself seems to be simply a 

 great kettle-hole. All through Fairfield county the glacial 

 accumulation is of a great depth down to within a very short 

 distance of its margin. 



But perhaps the most remarkable of all the portions of 

 this line in Ohio is that running from Adelphi, in the north- 

 east corner of Ross county, to the Scioto River. The accu- 

 mulation at Adelphi rises more than two hundred feet above 

 Salt Creek, and continues a marked feature in the landscape 

 for many miles westward. Riding along on its uneven 

 summit, one finds the surface strewn with granitic bowlders, 

 and sees stretching off to the northwest the magnificent and 

 fertile plains of Pickaway county, while close to the south of 

 him, yet separated by a distinct interval, are the cliffs of 

 Waverly sandstone, rising two hundred or three hundred 

 feet higher, which here and onward to the south pretty 

 closely approach the boundary of the glaciated region. 



