EF. D. Chester—Distribution of Delaware Gravels. 189 
Arr. XXTIL.—The Quaternary Gravels of Northern Delaware 
le Maryland ; by FrepERIcK D. Cuester. (With 
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the formation or shore line of the Quaternary estuary has been 
traced for a ‘distance of forty miles, from the northeastern 
border of Delaware across the State into Maryland, to within a 
few miles of the Susquehanna, where it curves to the south, 
running parallel to the river until it reaches the head of the 
Chesapeake, west of Charleston. All of the area south of this 
line to a parallel marking the southern border of Cecil county 
has been systematically studied and is the territory presented 
for consideration. The entire Delaware and Chesapeake Penin- 
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as the present season of field work has been closed, and as the 
accumulated facts of the whole area would be too great for a 
single paper, the author has thought it best to divide the whole 
Peninsula into two or three divisions, and to treat each sepa- 
Tately, and as fully as the facts deserve. 
At the present time we shall therefore discuss what we shall 
call the northern area. 
“ee history of these deposits forms a part of the history bs 
flooded Delaware whose record is written upon both sides 
te entered the region of glacial ice and débris. Although 
iY, Systematic study of the Delaware flood deposits has been, 
ite pages of this history shall have been collected, they 
Me | form an interesting addition to our present knowledge o 
8lacial and postglacial geology. 
nag the chief among them being of a gently rc . 
b Tainic character due to the accumulation or irregular distr: — 
ution of gravel, varying in nature from the 
“pe ag pebbles, cobble stones, and bowlders of several tons in 
latifa . Were it not for the preconceive . 
os e, one might, from a narrow circle 0 
Spee the region of the moraine projonde. 
