634 
BULLETIN OP THE BUREAU OF FISHERIES 
Annual differences in temperature — Continued 
CENTER OF GULF NEAR CASHES LEDGE 
Depth, meters 
1913 
10090 
Aug. 10 
1914 
10255 
Aug. 23 
1915 
10308 
Sept. 1 
o _ 
16. 1 
19. 2 
15 8 
20 _ 
11. 1 
12. 2 
11,2 
40 
7. 2 
7.8 
9 1 
60 _ 
6. 6 
5 7 
7 7 
80 
6. 4 
4. 3 
6! 8 
100 - 
6.4 
3. 1 
6. 3 
120 - 
6. 4 
4. 1 
6 0 
140 _ 
6. 4 
4 7 
5 8 
160 - - ___ 
6.5 
5. 5 
6.7 
180 
6. 6 
6.3 
200 - - - 
6.6 
TROUGH BETWEEN JEFFREYS LEDGE AND COAST 
Depth, meters 
1912 
10011-12b 
July 17-23 
1913 
10104 
Aug. 15 
1914 
10252 
Aug. 15 
o 
16.0 
8.3 
6.1 
4.8 
4.6 
4.6 
4.6 
17.2 
9.6 
7.8 
6.6 
5.8 
5.2 
4.8 
4.5 
4.3 
16.2 
12.0 
7.8 
6.2 
6.0 
4.3 
3.8 
’3.7 
20 _ - 
40 — 
60 
80 
166 - 
120 - 
140 - - 
160 
4.1 
180 
* At 130 meters. 
OFF CAPE ELIZABETH 
Depth, meters 
1912 
10019 
July 29 
1913 
10103 
Aug. 12 
1914 
10251 
Aug. 14 
1923 
Aug. 7 
o_ . ______ 
13.9 
11. 1 
• 8.3 
6.9 
5.8 
5.7 
16.1 
11.3 
8.7 
7.4 
6. 1 
6.7 
16.6 
18.1 
20 
40 - - 
5.7 
4.3 
3.9 
60 - 
80 
100. _ 
4.4 
3.6 
3.5 
120 
140 _ 
4.9 
OFF PENOBSCOT BAY 
Depth, meters 
1912 
10039 
Aug. 22 
1913 
10101 
Aug. 14 
1914 
10250 
Aug. 14 
0 
13.3 
11. 1 
13. 1 
20 - - 
11.3 
10. 1 
10.2 
40 _ — 
9.3 
9. 4 
8. 6 
60 
8. 9 
8. 1 
7. 9 
80 ___ 
8. 7 
8. 7 
7. 4 
100 
8.3 
8.4 
7. 1 
120 
7.9 
6. 6 
140 — _ 
7.3 
6. 2 
