or SEA- WATER IN THE DIFFERENT PARTS OE THE OCEAN. 
237 
At 11° 43' N. lat. and 25° 6' W. long., 
from the surface, 
20-035 chlorine = 36-123 per 1000 salt; 
from 3600 feet, 
19-855 chlorine =35*799 per 1000 salt; 
from 4500 feet, 
19-723 chlorine =35-561 per 1000 salt. 
At 1° 10' N. lat. and 25° 54' W. long., 
from the surface, 
19-757 chlorine =35-622 per 1000 salt; 
from 1800 feet, 
19*715 chlorine =35*546 per 1000 salt; 
from 3600 feet, 
19-548 chlorine =35*245 per 1000 salt. 
For the South Atlantic Ocean, the relation between the salts of the upper and lower 
parts of the sea is variable and difficult to explain. In 0° 15' S. lat. and 25° 54' W. long, 
the quantity of salts found in different depths was as follows : — 
from the surface, wanting ; 
from 900 feet, 
19-763 chlorine =35-820 (coefficient 1-814); 
from 1800 feet, 
19- 991 chlorine =36-264 (coefficient 1-814);. 
from 4500 feet, 
19*786 chlorine =35*892 (coefficient 1-814);, 
from 5400 feet, 
20*007 chlorine =36-293 (coefficient 1-814). 
Most deviating is a series of observations from 22° 37' S. lat. and 34° 57' W. long. : — < 
from the surface, 
20- 397 chlorine =37-000 (coefficient 1-814); 
from 900 feet, 
20-323 chlorine =36*866 (coefficient 1-814); 
from 1800 feet, 
23*189 chlorine =42-165 (coefficient 1-814);, 
from 2700 feet, 
20-331 chlorine =36-880 (coefficient 1*814); 
from 3600 feet, 
20-405 chlorine =37*015 (coefficient 1*814). 
Already in the water from different depths immediately on the south side of the 
Equator there is a curious variation ; at 1800 feet it is about one-half per 1000 richer in 
salt than at 900 feet, and in 4500 feet the quantity of salt has diminished as much as it 
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