170 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
the temperature rises, depth for depth, from the land seaward, as in 
the preceding one. ‘Two partial profiles, one just north, the other just — 
south of Delaware Bay, connect the Chesapeake Bay profile with the 
one just described. The stations composing the first of these (Stations — 
10080 and 10072) were, unfortunately, occupied at an interval of two 
weeks; but other observations have shown that it is only the inter- 
mediate surface layer which had warmed up appreciably in the interval. 
At the outer of the two stations the bottom temperature was 47.8° 
at twenty-five fathoms; and corresponding to the steepness of the 
shelf, this cool water was found nearer shore, though at about the same 
depth, than further north. 
Just south of Delaware Bay (Fig. 13) there was no water colder than 
50° on the shelf; the lowest temperature being 50.8° at thirty fathoms 
(Station 10074). But the curves show the progressive warming, 
depth for depth, from land to sea, which characterize the preceding 
profiles; the reading (52.5°) being the same at fifteen fathoms at the 
shore end as at twenty-seven fathoms at the offshore end of the profile. 
Off Chesapeake Bay (Fig. 14) the slope was bathed with water of 
50°-52° from twenty-five fathoms down to 130 fathoms. There the 
surface water cooled from the shore seaward instead of warming | 
as it does further north (p. 165). But though the temperature above 
five fathoms was highest at the shoreward end of the profile, the ten 
fathom (bottom) temperature was lower (57.6°) there than further off 
shore. 
The general rise in temperature on the shelf from north to south is 
illustrated by a profile parallel with the coast at about the forty fathom 
curve (Fig. 15). Below twenty-five fathoms the curves are distorted by 
the intrusion of warm water (51°) on the bottom near Station 10065, 
resulting in the extension of cold water southward over warm. The 
lowest temperature is at the northerly end at forty-five fathoms. 
TEMPERATURE IN THE GULF OF MAINE. 
Surface temperature. 'The distribution of surface temperature 
in the Gulf of Maine was the same in general as in 1912, the north- 
eastern part being coldest, the southwestern warmest. The surface 
water (Fig. 1) abreast of Massachusetts Bay, along shore from Cape 
Cod to Cape Elizabeth, and eastward nearly to German Bank was 60° 
or warmer, usually 60°-62°; and although the surface was consider- 
ably warmer (64°-66°) northeast of Cape Cod and in the neighborhood — 
aa 
