t>e Geer.] 
468 
[May 18, 
The remarkable overturned boulder which Professor Shaler de- 
scribes on the southern summit of Jordan’s Hill at an elevation 
of more than 300 feet does not seem in itself a sufficient proof of 
ice-shove from the sea and thus of submergence up to this level, 
as we cannot safely deny the possibility that it might have been 
overturned by the roots of a tree in a violent storm or even by the 
agency of man. 
At the road on the southeast side of The Cleft, it looks as if 
the rocks had been swept bare by the sea up to about 200 feet, 
but we could not stop to ascertain with the handlevel whether 
this had been the case. 
I stayed for a few days more to make further attempts in de- 
termining the marine limit. 
About one and a half miles soutli of Bar Harbor, at the southern 
end of the 280 foot hill, I found a cut terrace, above which I 
could find nothing but angular stones, while on a level a few feet 
lower waterworn gravel and pebbles were plentiful, as on the 
op of the roadhill. Here, as in other places on the island at a 
somewhat lower Level, the gravel overlapped the clay, having been 
brought into this position as shore drift during the successive up- 
heavals of the land. The height of the marine limit at this point 
as far as it could be ascertained was about 209 feet (c. 64 m.). 
About one mile southwest of Bar Harbor and one mile E.N.E. 
of the northern end of Eagle Lake, just above the covering of 
marine sediment, I found a little series of well developed beaches, 
of which the uppermost and largest, marked by a gravel pit, was 
situated according to the barometer at a height of about 210 feet 
(c. 64 m.) . 
Finally I returned to the above mentioned point N. E. of Somes 
Sound, where I first observed the marine limit, and made a 
more careful investigation. I followed the shore-line with a 
handlevel for nearly half a mile north of the road, finding the fol- 
lowing differences, the absolute height being measured with a 
barometer : — 
(«) Farthest to the north of the road 210 feet (63.5 m.). 
(6) Midway between (a) and (d) 211 “ (64.1 “ ,). 
(c) Nearer the road 213 “ (64.4 “ ). 
(d) Just north of road 213 “ (64.5 “ ). 
(e) South of road 209 “ (63.4 “ ). 
Fine unwashed till occurs in open situation immediately above 
this shore-line as well as north of the road. 
