74 MAN AND THE GLACIAL PERIOD. 



New Hampshire, within twenty-five miles of the coast, it 

 is quite uniformly to the southeast, or east-southeast. 

 Farther inland, in both of these States, it is generally 

 from north to south, or a few degrees east of south ; while 

 in the valley of the Connecticut Eiver it is frequently a 

 little to the west of south. In New Hanrpshire, besides 

 its accumulation in these hills, the till is frequently 

 amassed in slopes of similar lenticular form. These have 

 their position almost invariably upon either the south or 

 north side of the ledgy hills against which they rest, show- 

 ing a considerable deflection towards the southeast and 

 northwest in the east part of the State. It cannot be 

 doubted that the trend of the lenticular hills, and the 

 direction taken by these slopes, have been determined by 

 the glacial current, which produced the striae with which 

 they are parallel.* 



Drumlins are abundant in the vicinity of Boston, and 

 constitute nearly all the islands in Boston Harbour. On 

 the mainland, Beacon Hill, Bunker Hill, Green Hill, Pow- 

 derhorn Hill, Tufts College Hill, Winter Hill, Mount Ida, 

 Corey Hill, Parker Hill, Wollaston Heights, Prospect Hill, 

 and Telegraph Hill are specimens. 



The northeastern corner of Massachusetts and the 

 southeastern corner of New Hampshire are largely cov- 

 ered with these peculiar-shaped glacial deposits, while 

 they are numerous as far west as Fitchburg, in Massachu- 

 setts, and Ware, N. H., and in the northeastern part of 

 Connecticut. A little later, also, we shall refer to an in- 

 teresting line of them in central New York. Elsewhere 

 in America, except in a portion of Wisconsin, they rarely 

 occur in such fine development as in New England. In 

 Europe they are best developed in portions of Ireland. 



One's first impression in examining an exposed section 



* Proceedings of the Boston Society of Natural History, vol. xx, 

 pp. 224, 225. 



