BIGELOW: COAST WATER EXPLORATION OF 1913. 243 
In 1879 the water was colder in the southern part of Massachusetts 
Bay than we found it in 1912, except on the immediate surface, as 
illustrated by the following pair of stations some eight miles north- 
west of Race Point: — 
1879 1912 
Depth Aug. 25 Aug. 31 
0 Bin?! 58.0° 
a 49 oD 
10 44.5 52ee 
1D 43.5 47 
20 43.5 45.9 
25 43.5 44.6 
30 43.5 44.3 
and the difference can not be explained by differences in vertical 
circulation, the mean temperature being 46.7° in 1879, 49.9° in 1912. 
But by the end of September, 1878, the SPEEDWELL found the tempera- 
tures in this region very close to the GRampus records of a month 
earlier, e. g., 58°-59° at the surface, 44°-45° at thirty fathoms. There 
| was even a greater difference between the two years in the deep water 
east of Cape Cod, especially in the mid-depths, as illustrated by a pair 
| of stations within five miles of each other. 
1879 1912 
Depth Sept. 1 Aug. 29 
0 60° 60° 
10 52 5d 
20 47 50.9 
gic30 43 48.5 
40 4] me o4Adic 
50 40.8 44 
60 40.7 42 
70 40.6 41.7 
80 40.6 41.3 
The 1879 temperatures are not directly comparable with those of 
11913, there being no pairs of stations at the same locality and date; 
but this side of the Gulf was even warmer in 1913 than in 1912 (p. 250). 
The Fish Hawk records for August, 1882, are especially important, 
because in that year the subsurface temperatures were very low south 
pF Cape Cod. They yielded the following results. Off Race Point, 
