Wright.] 218 [April 2, 
abundant in West Acton, Ayer Junction, Leominster, Lunenburg, 
and West Fitchburg. Whether these clusters of lenticular hills may 
be correlated with similar clusters farther west in Hillsboro’ and 
Cheshire counties, N. H., I will not venture to say. But those clus- 
ters are in the same latitude, and may not unnaturally mark periods 
when the ice sheet paused, before its final advancement to the south 
shore. 
7. We wish now to return to some of the peculiarities of the kames. 
As we have seen, they run, in the main, at right angles to the termi- 
nal moraine. ‘They are frequently, but not always, stratified. The 
stones in them are never striated; are usually worn smooth, but fre- 
quently are only slightly smoothed. The twenty or more series of 
kames, to which I have called your attention, preserve their even 
way with remarkable regularity, being nearly parallel with one 
another for scores of miles. They cross rivers and valleys, and ele- 
vations under two hundred feet, without difficulty. They frequently 
overlie the lenticular hills. They are never deposited in channels 
worn in the till. I must make more particular mention of the inde- 
pendent manner in which the kames treat minor irregularities. 
Professor Stone relates that in Plymouth, Penobscot Co., Maine, 
the kame crosses Newport Point, and the level country south, par- 
tially climbs the hill north of Plymouth, begins again on the south 
slope, crosses Plymouth pond, climbs another hill (almost disappear- 
ing at the top) then descends to North Dixmont, and continues some 
distance as a ridge seventy feet high, then expands into a plain, 
beginning again as a series of ridges and hillocks, ending in the great 
Dixmont range. The noticeable thing in Plymouth is that a conical 
hill seems to deflect the kame slightly to the east, keeping it up on 
hills one hundred or more feet above the neighboring valley. 
The Rangeley Lake kame, as we have seen, follows down a tributary 
to the Androscoggin, on one side, and follows it up on the other, and 
crosses the water shed into a more southerly portion of the valley. 
Mr. Upham records, that in the Ossipee basin the kame rises from 
the mouth of Pine river, to the water shed between that and Balch 
Pond fully 150 feet (N. H. Geol. Rep., mz, 148). In my pre- 
vious paper several instances are mentioned of kames passing over 
lenticular hills, and down into comparatively narrow valleys, as at 
Lawrence. I will only add two other instructive examples of a dif- 
ferent sort. 
