REPORT ON THE COMPOSITION OF OCEAN-WATER. 
187 
Oxygen 
Number 
deficit less 
of 
than 
Cases. 
No. 
504 602 638 977 1011 1510 1573 1629 1699 
■16 
9 
St. 
171 196 202 253+ 258 327 337 345 354 
. 
V 
19+4 27°-9 29°-4 21°-7 25°-0 21+0 25°T 27+9 20+5 
No. 
486 497 512 515 528 557 572 700 761 1003 1187 1176 
•20 
12 
St. 
168+ 170 171a 172+ 176 181 185 216+ 223 256+ 282 281 
‘ 
u 
14 o, 0 17+8 21°-9 24°-5 25°‘5 26°-7 25+0 27+8 28+7 24+0 22+9 24+2 
No. 
817 722 1683 
•24 
3 
St. 
229 - 218 352+ 
t 0 . 
25+8 28+6 22+5 
No. 
759 532 
•28 
2 
St. 
222+ 177 
to- 
28+6 25+1 
No. 
[455] 1287 1424 
•32 
3 
St. 
164c 293+ 309 
to- 
17+5 12+5 9+4 
No. 
[949] 
•80 
1 
St. 
251 
to- 
17+9 
i Total = 65 Cases. 
This table, as it stands here before us, looks almost like the area of a probability 
curve ; but it does not follow that the variations in the oxygen deficit are a matter of 
accident. In fact, if we search on the Challenger track-map for the Stations registered 
in our table as corresponding to oxygen deficits from — 0’20 to +0'08 (inclusive), we see 
that most of the respective waters came from one or other of two areas, namely, either 
from one in the Indian Ocean, south of lat. 50° S., or from another enclosed very nearly 
between the parallels lat. 30° S. and 55° S., and the longitudes 120° W. and 30° W. 
Only the following 7 out of 27 waters did not come from one of these two areas, viz. : — 
No. of Water, . 581 
Station, . . 190 
Long., . . 136° 5' E. 
Lat., . . 8° 56' S. 
Temperature of water ] 
when collected (< u ), j 
826 910 976 990 1004 1687 
229 244 253 255 257 353 
140° 27' E. 169° 53' E. 156° 25' W. 154° 33' W. 154°55'W. 33°37'W. 
22° 1' N. 35° 22' N. 38° 9' N. 32°28'N. 27°33'N. 26°21'N. 
22+8 
! i °-8 
21+7 
20+6 
23+9 
24+4 
