RECESSIONAL ICE BORDERS IN BERKSHIRE, MASS. 339 



Fig. 5 shows 

 a well-defined 

 lateral moraine 

 on the southwest 

 flank of East 

 mountain about 

 three miles north- 

 east of Hancock, 

 Mass. The heavy 

 bank of till rises 

 conspicuously to 

 a certain level 

 above which the 

 drift coating over 

 the rock is thin. 

 The fresh guUey 

 recently cut by a 

 rivulet shows the 

 composition of 

 the mass. The 

 endof thistongue 

 was on the right 

 at Brodie pass. 



Fig. 6 is in 

 the valley of 

 Deerfield river 

 near the mouth 

 of Dunbar brook 

 about two miles 

 below Monroe 

 Bridge. This is 

 a remarkable 

 locality. The 

 mountain wall on 

 the left rises over 

 1,000 feet from 

 the river, in one 



