THE VOYAGE OF H.M.S. CHALLENGER. 
] •»•■> 
Number of 
Sample. 
Date of 
Collection. 
Depth 5. 
Mgrms. of 
CO;, per Litre. 
Remarks. 
1001 
187 
July 
3. 
21 
2875 
29-9 
1003 (a) 
t) 
22 
0 
6-5 
Brine from boilers. Steaming at 
1096 
Aug. 
30 
2900 (?) B 
2700 B 
343 
17 lbs. pressure. 
1087 
f» 
28 
40-5 
1097 
ft 
31 
0 
28 ’9 
1096 
Sept. 
1 
2900 (?) B 
42-7 
Bottom water of 30 th August distilled 
1106 
ft 
2 
2550 B 
32-8 
to dryness with - 2 grm. cryst. potas- 
sium permanganate (KMn0 4 ). 
The water contains 8 ‘4 mgrms. 
organic C0 2 = 2’3 mrgms. carbon. 
1181 
Oct 
6 
200 
43-2 
The almost dry residue was treated 
1205 
ft 
11 
200 
35-8 
with • 2 grm. cryst. KMn0 4 dis- 
solved in 100 c.c. water, and this 
sol. distilled to dryness and the car- 
bonic acid evolved determined. 2 4 - 6 
mgrms. C0 2 = 6 - 7 mgrms. carbon. 
The dry residue was treated exactly 
1209 
91 
11 
1975 
* 51-2 
as that of 1 181. 23 *7 mgrms. C0 2 
= 6 "5 mgrms. carbon. 
The residue treated with KMn0 4 . 
1208 
ff 
11 
800 
46-2 
27'2 mgrms. C0 2 = 7 - 4 mgrms. C. 
The dry residue treated with KMn0. r 
1221 
ft 
14 
B 
45 6 
28T mgrms. C0 2 = 7’7 mgrms. 
carbon. 
1245 
ft 
21 
2600 B 
650 
1256 
ft 
23 
2550 B 
47-4 
1270 
ft 
27 
2250 B 
46-4 
1269 
ft 
27 
1775 
42-3 
1272 
ft 
29 
0 
36-6 
1287 
Nov. 
2 
0 
41-8 
1289 
ft 
3 
25 
33-1 
1294 
ft 
3 
400 
446 
1300 
ft 
5 
1500 B 
47-5 
1301 
ft 
6 
0 
350 
1313 
9 
1825 B 
44-7 
1314 
ft 
10 
0 
37 3 
1337 
•t 
17 
B 
44-3 
1342 
Ib-c. 
13 
0 
361 
1350 
tf 
14 
B 
44-4 
1345 
ft 
14 
50 
410 
1348 
ft 
14 
300 
42-9 
1 353 
ft 
16 
10 
36 T 
1 35 2 
ft 
16 
o 
37-9 
This result is too high. The receiver 
IM3 
17 
B 
49-3 
broke just at the end, and the car- 
bonic acid in U tubo had to be 
neglected. 
1354 
ft 
17 
50 
50 '4 
1364 
20 
0 
47-8 
1367 
tf 
21 
0 
47-3 
1374 
9# 
23 
0 
51 *2 
