BIGELOW: COAST WATER EXPLORATION OF 1913. 209 
salinity of the water between five and twenty fathoms was slightly 
lower than at Stations 10092 and 10094, on either side of it. 
Successive profiles from near shore toward the centre of the Gulf, 
at right angles to the last, show that the water was fresher along the 
western coast than off shore. In the profile (Fig. 49), from Cape 
Porpoise, across the northern end of Jeffrey’s Ledge, to Station 10090, 
the salinity curves all dip toward the land; but in the eastern half 
of the profile (Stations 10089 to Station 10090), they are practically 
100 
100 
Fic. 50.— Salinity profile fr rom Station 10102, off the mouth of Penobscot 
& Bay, across Jeffrey’s Bank (Station 10091) to the centre of the Gulf of 
Maine (Station 10090). 
forizontal, 2. ¢., the salinity in the upper fifty fathoms was uniform 
jorizontally ; though below that depth the off shore water (Station 
0090) was slightly saltest. The fact that the salinity was precisely 
he same (33.4-33.5%o) on the bottom in the sink where Station 10089 
vas located, as at seventy fathoms in the basin to the east of it, shows 
hat its rim, which rises to a general level of about seventy-five fathoms, 
: 
ind is crowned by the much shallower Cashes Ledge, is an effective 
