BIGELOW: COAST WATER EXPLORATION OF 1913. 249 
the higher salinity of 1913 off Penobscot Bay, for there our obser- 
vations were made at practically the same season in the two years. 
Comparison of the charts for the two years (Plate 2, and 1914a, Plate 2) 
shows how much further northwestward toward Penobscot Bay the 
salt tongue of off shore water extended, and, conversely, how much 
less evident was the outrush of comparatively fresh water from the 
bay, in 1913. But east of Mt. Desert the surface water next the coast 
was fresher in 1913 than in 1912. 
Over the Nova Scotia coast bank, near Lurcher Shoal, likewise, the 
surface salinity was higher in 1912 (32.84% at Station 10031) than in 
1913 (32.75%o at Station 10096); but on German Bank the reverse 
was the case (32.70%po at Station 10029, 32.79%» at Station 10095). 
Over the eastern basin the surface salinity was slightly higher in 1912 
than in 1913, the readings at three pairs of stations being: — 
Station 10027 1912. 32.66% 
10092 1913 32.59 
10028 1912 32.75 
10093 1913 32.61 
10036 1912 Sy dag as 
10097 1913 32.75 
And in 1913 the surface salinity was nowhere so high in the Gulf as it 
| was off Lurcher Shoal in 1912 (32.84%). 
| The subsurface salinity for the two years was about the same in 
| Massachusetts Bay, in August, for, though there was much less 
| difference between surface and bottom in 1913 (Station 10106) than 
at the same locality in 1912 (Station 10045), the mean for the entire 
| column is almost precisely the same (32.4% ). 
| The observations off the mouth of the Bay were taken a atin later 
| in 1913 than in 1912. And while the salinity was considerably higher 
above forty fathoms, lower below that depth, in 1913 than in 1912, the 
| mean salinities for the two years differs by only about .1%o (Station 
: ow July, 1912, 32.54%; Station 10087, August, 1913, 32.63%o), 
no more than can be charged to the general rise of salinity which takes 
i B olace after the spring freshets from the rivers have passed (1914b). 
Tn the western basin the observations for 1913 (Station 10088) were 
Intermediate i in date, as well as in geographic location, between the two 
i of 1912 (10007, 10043); and they were likewise intermediate in 
‘salinity all the way from surface to bottom, 7. e., it was about the same 
ia this general region in the two years. The same is also true of the 
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