NARRATIVE OF THE CRUISE. 
965 
increase of pressure, and this has since been confirmed by experiments made by Professor 
Tait. 
Around the Society Islands the saltest water of the Pacific is found ; it is here 
only that the density exceeds P0270, and nowhere does it reach P0275. The great 
bulk of the water in this Ocean has a density under 1 '0260. The very low surface 
specific gravity observed in lat. 9° N. is purely superficial, and is characteristic of the 
Counter Equatorial Current. As in the Atlantic, the minimum specific gravity is found 
usually at a depth of about 1000 fathoms, but in the Pacific light water approaches 
the Equator from both sides at the bottom, whilst in the Atlantic it comes in a marked 
degree only from the south ; and consequently in the North Pacific the mean specific 
Table VI. 
Interval of Latitude. 
Atlantic. 
Pacific. 
From 
35 N. 
30 
25 
20 
15 
10 
5 
0 
5 S. 
10 
15 
20 
25 
30 
To 
30 N. 
25 
20 
15 
10 
5 
0 
5 S. 
10 
15 
20 
25 
30 
35 
Density at 60° E. 
(15°-56 C.). 
1-02724 
755 
766 
713 
669 
635 
585 
628 
649 
711 
765 
728 
693 
674 
Salt in Grammes 
per Kilogramme. 
Density at 60° F. 
36- 65 
37- 03 
37-17 
36-48 
53-91 
35-47 
34- 82 
35- 38 
35- 65 
36- 46 
37- 16 
36-55 
36-22 
35-98 
1-025S6 
614 
589 
579 
572 
552 
612 
654 
642 
655 
679 
690 
640 
629 
Salt in Grammes 
per Kilogramme. 
34- 83 
35- 20 
34-87 
34-74 
34-65 
34- 39 
35- 17 
35-72 
35-56 
35- 73 
36- 04 
36-19 
35-54 
35-39 
35 N. 
0 
35 N. 
0 
35 S. 
35 S. 
1-026924 
6926 
6925 
36-216 
36-218 
36-217 
1-025863 
6554 
6209 
34- 836 
35- 735 
35-288 
