44 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
days had driven the warm surface water to the south. And even in 
this case it is probable that the cold water which took its place welled 
up from below, rather than that it was an extension of the cold zone 
normally encountered some 15 miles further north. At 43° 27’ .N. 
Lat., 7. ¢., a few miles south of Cape Elizabeth, the cold band suddenly 
became broader, the 60° curve bending eastward almost at a right 
angle, and roughly following the parallel of 43° 27’, to within about 
35 miles of Seal Island, Nova Scotia (7. e., 66° 49’ W.) where it turned 
southward and passed out of the area covered by the cruise of 1912. 
The cold water thus expands from a narrow band to a triangular area 
which is about 45 miles broad opposite Grand Manan. It is continu- 
ous thence along the western coast of Nova Scotia, becoming narrower 
again (25 miles broad) off Yarmouth. Throughout this triangle the 
temperatures, day and night, were everywhere 59° or below, except 
for one sporadic reading of 60° off the Grand Manan Bank, probably 
explicable by diurnal warming on a very calm day; and the diurnal 
range very small. From Portland eastward to Mt. Desert the tem- 
perature range was from 56°-58°, a very small variation when we 
remember the strong tides of this region. Northeastward from Mt. 
Desert the temperature close to the coast dropped below 55°; and 
from Moose Peak to and through the Grand Manan Channel, as well 
as in Passamaquoddy Bay and Eastport Harbor the temperature on 
the surface was 50°-52°. 
Unfortunately we did not enter the Bay of Fundy proper, and it is 
therefore impossible to draw the curve of 55° accurately. But so far 
as our observations show, it touched the outer islands at Mt. Desert; 
ran easterly for about 25 miles, and then turned southeasterly, en- 
closing the Bay of Fundy and a band along the west coast of Nova 
Scotia. On our run from Station 28 to Station 29, the drop in tem- 
perature was very sudden, from 60° at 60° 49’ W to 50.5° at Station 
29, 20 miles further east. The area of water colder than 55°, is then 
roughly comparable in outline to that between 55° and 60°, though 
much smaller in extent. And this cold water was below 55°, usually 
below 53°, by day as well as by night. The lowest surface tempera- 
- tures encountered were on German Bank (50.5°) off Grand Manan 
Bank (50°), and in the Grand Manan Channel (50°). 
Our only example of seasonal change is in Massachusetts Bay, 
which we studied at the beginning and again at the end of our cruise. 
From July 9-15 the temperatures in the northern half of the Bay 
during the day time were usually 63°-65° (60°-65°) except for the 
occasional cold bands mentioned (p. 43) to which we will have occa- 
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