REPORT ON THE COMPOSITION OP OCEAN- WATER. 
219 
No. 
Temperature 
C. 
C0 2 , mgrms. 
per litre. 
Latitude. 
369 
5°-4 
37-3 
50° S. near Kerguelen Islands. 
1272 
ll°-8 
36-6 
38° 43' S. ] 
1301 
14°-7 
35-0 
38° S. 
1314 
1342 
13°-fi 
16°-9 
37-3 
36-1 
37° to 38° S. 
33° S. 
Stations 292 to 309, South Pacific, from 
about 44° W. of Chili to channels 
between Gulf of Pennaz and 
Magellans Strait. 
1352 
17°*5 
37-9* 
33° S. 
1424 
9° -4 
39-5 
51°~S. 
1462 
I4°-2 
38-5 
j Lat. 42° 30' S., Station 318; 10° east of east coast of 
( South America. 
949 
17°-9 
29T 
Station 251 ; 
Lat. 37° 37' N. 
I thought I might collect all those cases of surface waters which gave less than 
o o o 
30 milligrams of carbonic acid per litre and put them down as cases of exceptionally low 
values of carbonic acid in surface water — 
No. 572. C0 2 =27 - 3; Station 185 + ; lat. 11° 35' S., between Australia and Humboldt Island. 
„ 682. C0 2 = 25T; Station 214; lat. 4° 33' N., 3° N.E. of Celebes. 
„ 760. CO 2 = 30 - 3; Station 223 -; lat. 5° 31' N., 10° N. of Admiralty Islands. 
„ 817. C0 2 = 24-7; Station 229 -; lat. 22° N., 13° S. of Yeddo. 
„ 826. CO 2 = 20'7; Station 230 - ; lat. 26° 29' N., 10° S. of Yeddo. 
„ 926. C0 2 = 26-7; Station 247-248; lat. 35° to 37° N., middle of North Pacific. 
„ 949. C0 2 = 29T ; Station 251; lat. 37° 37' N., middle of North Pacific. 
,, 990. C0 2 = 19 - 3; Station 255-256; lat. 32° to 30° N., middle of North Pacific. 
„ 1097. C0 2 = 28‘9; Station 368+ ; lat. 7° 35' N., middle of North Pacific. 
Seeing that these low proportions of carbonic acid all come from the Pacific, I collected 
all the values of carbonic acid in surface waters — a, from the Atlantic ; b, from the 
Pacific respectively — and extracted their temperatures from Buchanan’s specific gravity 
tables. Including only those cases in which the temperature of the sample was not less 
than 20° C., I found : — 
Atlantic, 20 cases ; mean loose carbonic acid = 41'0. Pacific, 18 cases; mean loose 
carbonic acid = 36'1. If we exclude No. 532, on account of its abnormally high carbonic 
acid, we have 32'53. 
In the case of the Pacific there are 15 entries in which the temperature ranges from 
* “ Too higfi ” (Buchanan). 
