254 
PROFESSOR FORCHHAMMER ON THE COMPOSITION 
Eleventh Region. — The Atlantic, between the Equator and 30° S. latitude. 
Chlorine. 
Sulphuric 
acid. 
Lime. 
Magnesia. 
All salts. 
Coefficient. 
\ 20*003 
2-312 
(11*56) 
0-596 
(2-98) 
2*235 
(11-17) 
36*084 
1-804 
[ 20*491 
2*465 
(12-03; 
0*598 
(2*92) 
2*218 
(10*82) 
37*155 
1*813 
j- 20*397 
37*001 
1-814 
f 20-115 
2-428 
(12*07) 
0-580 
(2-88) 
2*233 
(11*10) 
36-442 
1-812 
| 19*831 
2-393 
(12-07) 
0-596 
(3-01) 
2-254 
(11*37) 
35-930 
1-812 
| 20-049 
2-379 
(11-87) 
0-563 
(2*81) 
2*253 
(11*24) 
36*261 
1-809 
| 20*166 
2-537 
(12-58) 
0*585 
(2-90) 
2-022 
(10-03) 
36-997 
1*835 
| 20-150 
2-419 
(12-03) 
0*586 
(2*91) 
2-203 
(10*96) 
36*553 
1-814 
| 20-491 
2*537 
(12*58) 
0-598 
(3*01) 
2*254 
(11*37) 
37*155 
1*835 
| 19*831 
2-312 
(11-56) 
0*563 
(2*81) 
2-022 
(10-03) 
35*930 
1-804 
1. Valkyrie, February 11, 1848. 
S. lat. 3° 19', W. long. 25° 34' 
2. Valkyrie, February 1 6, 1848. 
S. lat. 17° 9', W. long. 33° 29* 
3. Sir James Ross. 
S. lat. 22° 37', W. long. 34° 57' 
4. Dr. Fischer, 1846. 
S. lat. 23°' 5', W. long. 37° 15' 
5. Dr. Fischer, 1846. 
S. lat. 28° 15', W. long. 38° 26' 
6. Captain Prevost, February 4, 1857- 
S. lat. 29° 14', W. long. 47° 37' 
7. Valkyrie, March 15, 1848. 
S. lat. 29° 131', w. long. 38° 26' 
Mean 
Maximum 
Minimum 
Twelfth Region. — The Atlantic between S. lat. 30° and the southernmost points of 
America and Africa. 
Chlorine 
Sulphuric 
Lime 
MsguGsi&a 
All salts. 
Coefficient. 
acid. 
Dr. Fischer, 1846. 1 
19*809 
2-329 
0*583 
2*234 
35-807 
1*808 
S. lat. 30° 45', W. long. 42° 30' J 
(11*76) 
2*253 
(2*94) 
0-582 
(11*28) 
2*156 
Dr. Fischer, 1846. 1 
19*237 
34-774 
1*808 
S. lat. 40° 3(y, W. long. 40° 50' ( 
(11*71) 
2*194 
(3-03) 
0-557 
(11*21) 
2*135 
Dr. Fischer, 1846. I 
19*154 
34*526 
1-803 i 
S. lat. 45° 20', W. long. 48° 40' f 
(11-45) 
2*245 
(2-91) 
0-518 
(11-15) 
2*190 
Dr. Fischer, 1846. 1 
18*909 
34*151 
1*806 
S. lat. 50° 31', W. long. 52° 15' / 
(11*87) 
2*451 
(2*74) 
0*541 
(11*58) 
2*091 
Fregat Valkyrie, 1848. \ 
S. lat. 36° lli', W. long. 6° 39' / 
19*431 
35-065 
1*805 
(12*61) 
(2* 78) 
(10-76) 
Fregat Valkyrie, 1848. 
19*713 
2-404 
0-553 
2-156 
35-907 
1-821 
S. lat. 37° 1 1 A', E- long. 12° 25^-' j 
(12*19) 
(2-81) 
(11-04) 
Mean j 
19*376 
2*313 
0*556 
2-160 
35*038 
1*809 
(11*94) 
(2-87) 
(11-15) 
Maximum | 
19*809 
2*451 
(12-61) 
0*583 
(3-03) 
2*234 
(11*58) 
35*907 
1*821 
Minimum j 
18-909 
2-194 
(11*45) 
0*518 
(2*74) 
2-091 
(10*76) 
34*151 
1*803 
Captain Prevost*. J 
S. lat. 35° 46', W. long. 52° 57' i 
' 17*721 
1*615 
(9*10) 
Sulphuretted 
0-448 
(2*49) 
1-899 
(iO-72) 
34*489 
1*946 
hydrogen. 
* This sample has been left out in the calculation of the mean numbers because the quantity of sulphuric 
acid was greatly diminished by putrefaction. 
