MASSACHUSETTS. 



61 



Massachusetts. 



6. This and the adjoining towns are chiefly occupied by a profusion of lenticular-shaped drift- 

 hills, believed to be moraines of ancient glaciers, and different from the usual grand moraine of 

 glacial drift. The hills may be 200 feet high, and their longer axis run southeasterly, being 

 parallel with the course of the striae in the neighborhood. In the Merrimack and Connecticut 

 Valley a few have been found having a direction to the south and west-of -south, but agreeing with 

 the course of adjoining striae. 



