SUMMER IN A BOG. 13 



Near Springfield are many interesting de^ 

 posits of this kind. 



The hills of the terminal moraine abound in 

 springs, and often on the slopes a green area 

 will mark their presence. They feed the 

 streams and swamps below. 



It is not often that the composition of these 

 hills is revealed in nature's order; but in the 

 construction of the electric road, a slice cut 

 from the side of the highest point exposed 

 curious varieties of sand and gravel. A kame 

 had given its secret to the casual beholder. 

 In one place a broad vein of fine, dark sand, 

 without any earthy admixture, came to view. 



How I longed to know more, to be able to 

 read the story of the past ages as this riven 

 old hill was telling it! At first sight I had 

 thought of the country as lacking in geolo^cal 

 features. The undulating hills are covered 

 with grass or woods. The smooth fields yield 

 rich crops to the farmer, or serve to pasture 

 his fine herds. But for geology? 



Here are few outcropping strata to invite 

 the geologist's investigation. When the builder 

 needs sand for the mortar, or the road-maker 

 gravel, these hills and vales are found, in places, 

 rich in these requisites. In the near future, 

 as the forests fail in their building supplies, 

 concrete may take their place, and then this 



