426 
PROFESSOR FORCHHAMMER ON THE COMPOSITION 
In the following Tables the sulphuric acid, lime, magnesia, and potash are given both 
in parts per 1000 sea-water, and referred to chlorine as 100. The latter numbers are 
distinguished by being enclosed in parentheses. 
First Region. — From the Equator to 30° N. lat. 
Chlorine. 
Sulphuric 
Lime. 
Magnesia. 
All salts 
together. 
Coefficient. 
acid. 
1. Sir James Ross, June 11, 1843. 1 
19-757 
2-303 
0-584 
2-333 
35-737 
1-801 
N. lat. 1° 10', W. long. 25° 54' J 
(11-66) 
(2-96) 
(11-81) 
2. Captain Irminger, September 9, 1 847. \ 
19-584 
2-315 
0-765 
2-179 
35-803 
1-803 
Tocorady Bay, Guinea, 1 mile from the land... J 
(11-66) 
(3-85) 
(10-99) 
3. Captain Irminger, September 7? 1847- 1 
N. lat. 4° 10', W. long. 5° 36' / 
19-014 
2*224 
0-660 
2-163 
24-283 
1-803 
20-070 
(11-64) 
(3-47) 
(11-37) 
36-327 
4. Sir James Ross, July 6, 1843. 1 
N. lat. 6° 43', W. long. 27° 4' / 
f>. Valkyrie, February 3, 1848. 
19-766 
2-415 
0-568 
2-117 
35-941 
1-818 
N. lat. 10°, W. long. 24° 19£' J 
(12-22) 
(2-87) 
(10-71) 
6. Sir James Ross, July 11, 1843. 1 
N. lat. 11° 43', W. long. 25° 6' J 
20-035 
36-263 
7. Sir James Ross, July 22, 1843. 1 
20-114 
2-343 
0-619 
2-315 
36-195 
1*800 
N. lat. 12° 36', W. long. 25° 33' J 
(11-39) 
(3-08) 
(11-21) 
8. Sir James Ross, July 25, 1843. 1 
N. lat. 15° 38', W. long. 27° 15' / 
20-081 
36-347 
9. Sir James Ross, July 26, 1843. 1 
N. lat. 16° 57', W. long. 29° / 
20-186 
36-537 
10. Sir James Ross, July 27, 1843. 1 
N. lat. 18° 6', W. long. 29° 56' / 
20-429 
36-976 
11. Ornen, October 19 , 1846. 1 
19-818 
2-376 
0-567 
2-123 
35-775 
1-805 
N. lat. 19° 20', W. long. 65° 28' / 
(11-99) 
(2-86) 
(10-76) 
12. Valkyrie, January 28, 1848. 1 
N. lat. 24° 13', W. long. 23° 1 1' J 
20-898 
2-446 
0-595 
2-280 
37-908 
1-814 
(11-70) 
(2-85) 
(10-91) 
13. Captain von Dockum, July 17, 1845. 1 
19-650 
2-309 
0-567 
2-236 
35-732 
1-819 
Between the Islands St. Croix and St. Thomas / 
(11-75) 
(2-89) 
(11-36) 
14. Captain von Dockum, July 18, 1845. 1 
17*798 
2-304 
0-426 
2-195 
35-769 
1-807 
Likewise between the two islands J 
(11-64) 
(2-15) 
(11-69) 
15. Ornen, October 23, 1846. 1 
20-320 
2-423 
0-602 
2-208 
36-784 
1-810 
N. lat. 22° 43', W. long. 65° 12' J 
(11-92) 
2-344 
(2-96) 
0-554 
(10-87) 
2-164 
16. Captain von Dockum, Julv 29, 1845. 1 
20-145 
36-508 
1-812 
N. lat. 22° 30', W. long. 69° 1 0' / 
(11-64) 
(2-75) 
(10-74) 
17- Captain Irminger, March 17, 1849. 1 
20-302 
2-450 
0-620 
2-302 
36-736 
1-809 
N. lat. 25° 4', W. long. 65° 40' j 
(12-07) 
(3-05) 
(11-34) 
18. Captain von Dockum, July 30, 1845. 1 
N. lat. 23° 26', W. long. 64° 8' / 
20-291 
2-207 
(10-88) 
2-418 
0-606 
(2-99) 
0-600 
2-251 
(11-09) 
2-217 
36-352 
1*792 
19. Ornen, October 28, 1846. 1 
20-389 
36-838 
1-807 
N. lat. 29° 27', W. long. 60° 1' / 
(11-86) 
(2-94) 
(10-87) 
Mean <| 
' 20-034 
2-348 
0-595 
2-220 
36-253 
1-810 
(11-75) 
(2-98) 
(11-11) 
Maximum j 
: 20-898 
2-450 
(12-22) 
0*765 
(3-85) 
2-333 
(11-81) 
37-908 
1-819 
Minimum j 
■ 19-014 
2-207 
(10-88) 
0-426 
(2-15) 
2-117 
(10-71) 
34-283 
1-792 
