15G 
THE VOYAGE OF H.M.S. CHALLENGER. 
II. — Summary of the Measurements and Analyses of all the 
Sea -Water Gases. 
Column I. gives the number assigned by Mr. Buchanan to the respective water ; 
Column II- the Station at which (or the Stations between which) the water was collected, 
the sign — indicating that the sample was collected before, the sign + that it was collected 
after reaching the Station ; Column III. gives the volume (V 0 ) of total gas extracted 
from the water reduced to 0 and 760 mm. and dryness, in c.c. per litre of water; 
Column IV. the percentage of carbonic acid in the V. c.c. of total gas; Column V. gives 
the conjoint reduced volume (v Q ) of oxygen and nitrogen in c.c. per litre of water; and 
Column VI. the percentage of oxygen in the gas after elimination of the carbonic acid. 
In Column VII. a B means that the gas was measured and analysed by Mr. Buchanan. 
For waters other than surface waters, supplementary columns give, under 8, the depth 
at which the water was taken ; under D, the depth of the sea at that place. 
Table II. 
(A ). — Surface Waters. 
I. 
No. of 
Water. 
II. 
No. of 
Station. 
III. 
IV. 
V. 
VI. 
VII. 
(Total Gas.) 
(Gas freed from C0 2 .) 
Vo- 
Per cent. C0 2 . 
v 0 . 
Per cent. 0 2 . 
386 
153 
28-32 
16-75 
23-58 
35-01 
B 
387 
153 + 
2519 
1715 
20-87 
34-86 
389 
154 
25-79 
12-64 
22-53 
34-25 
B 
396 
154 
23-60 
11-70 
20-84 
34-17 
417 
158 
24-37 
19 02 
19-74 
34-01 
B 
817 
229- 
1701 
19-72 
13-66 
32-64 
455* 
164o 
6-72 
32-70 
471 
165a- 165b 
2195 
2312 
16-87 
33-47 
486 
168-169 
21-67 
2306 
16-68 
33-24 
497 
170 
2015 
18-66 
16-39 
33-18 
504 
171 
19-29 
21-49 
15-14 
33-31 
512 
171a 
17-85 
21-49 
14-01 
32-97 
515 
172-173 
15-42 
14-94 
1312 
32-72 
528 
176 
16-24 
17-30 
1313 
32-76 
532 
177 
16-85 
16-91 
14 00 
32-35 
B 
557 
181 
16-20 
18-46 
13-21 
32-72 
572 
185 
19-24 
22-38 
14-93 
32-85 
581 
190 
15-83 
15-57 
13.37 
33-34 
602 
196 
16-59 
2112 
13 09 
32-91 
612 
198 
15-26 
5-16 
14-47 
3307 
638 
202 
18-48 
27 07 
13-48 
32-89 
645* 
204 
16-81 
... 
33-11 
* Bunpccti-d Anulvuca 
