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[UphartK 
scribing the section of the sea-cliff of Great Head, Wintlirop, and 
noting its fossil shell fragments, specially directed my attention to 
this subject. An examination of Great Head and of the lower 
drumlin at Point Shirley convinced me, as before stated, that the 
former was the locality of Dr. Stimpson’s earlier and widely known 
observations. Mr. Dodge also informed me of the occurrence of 
similar shell fragments in Grover’s cliff on the northeast shore of 
Winthrop, nearly one and a half miles north of Great Head. 
My observations have included these drift sections and others in 
Winthrop, Revere, Chelsea, and thence southwest and south around 
Boston harbor, on several of the islands in the harbor, on the pen- 
insula of Hull and Nantasket, and in Hingham, Cohasset, and Scit- 
uate. In only a small proportion of the whole number of sec- 
tions examined were glacially transported shells and fragments of 
shells observed, these being found in Grover’s cliff and Great Head, 
Winthrop, on Long island, Moon, Peddock’s and Nut islands, in 
Quincy Great hill, in the drumlin forming the north shore of Hull 
close northwest of Telegraph hill, and in Sagamore Head, which 
rises from the Nantasket beach. All the other sections seen failed 
to yield any trace of organic remains, excepting that scanty frag- 
ments of lignite were found along an extent of two or three feet in 
the modified drift forming the base of the drumlin of Third cliff in 
Scituate by Professor Crosby and Mr. Bouve, who accompanied me 
in an excursion there. Without doubt, however, such transported 
shell fragments will be found in many other drumlins on islands 
in the harbor and on its eastern and southern shores, where they 
should be looked for in any deep section of the till, as in digging 
wells and in cliffs undermined by the sea. 
The area where shells and fragments of shells are known to oc- 
cur in the till has an extent of ten or eleven miles from northwest 
to southeast, reaching from East Boston and Grover’s cliff to Sag- 
amore Head, with a width of three or four miles, if not more, its 
eastern limit, which is the open ocean, being at a distance of four 
and a half miles east-northeast and eleven miles east-southeast of 
Boston. The fossiliferous sections are all in lenticular hills of till 
like the drumlins of Great Britain, which name is now adopted 
for them. These hills have a very fine development upon most 
of the country in the neighborhood of Boston, rising with smooth, 
ovally rounded contour to heights from 50 to 200 feet, and have 
PROCEEDINGS B. S. N. H. YOL. XXIY 9 APRIL, 1889 . 
