12 SUMMER IN A BOG. 



There are many such stones scattered over 

 the fertile fields of Ohio in this latitude, stran- 

 gers brought from Northern lands so many- 

 thousands of years ago, telling a story of by- 

 gone epochs in the earth's mysterious forma- 

 tion. 



Seated on this granite boulder, along the 

 horizon and near at hand I see lines and groups 

 of rounding hills, accumulations of sand, 

 boulders, clay, and gravel. Where these de- 

 posits are separate and in a measure distinct 

 and stratified, they are known as kames. Most 

 of the hills around me are composed of boulder 

 clay as a foundation, or mingled with gravel 

 and boulders. 



On their sides are frequently gullies, the 

 loose soil washed away by tempests of ages, 

 the dead bones of them — the stones — exposed 

 and revolting. "Where these hills are low and 

 lenticular, following each other in succession in 

 the trend of the valley drift, they are known 

 as drumlins. Sometimes, in woodland regions, 

 long, winding ridges of sand and gravel extend 

 for considerable distances, almost persuading 

 a belief that, cycles ago, the hand of man has 

 been at work erecting a dyke or, possibly, the 

 roadbed for a car line. This is an esker, and 

 Nature the only workman, aided by waves and 

 wind, by heat and cold. 



