ANCIENT GLACIERS. 



81 



are these ridges better developed than in New England, 

 except it be in southern Sweden, where they have long 

 been known and carefully mapped. 



Fig. 32.— The kames of Maine and southeastern New Hampshire. (Stone.) 



The investigations of Mr. W. 0. Crosby upon the com- 

 position of till in eastern Massachusetts is sufficiently im- 



