SUMMARY OF RESULTS. 
1005 
In addition, the following are recorded in the note-books : — Pyrocystis, Diatoms, 
Glohigerina, Hastigerina, Puhinulina, Cymhalo'pora {Tretomphalus) hulloides, Annelid 
larvae, Copepods, Lucifer, Appendicularia, and Doliolum. Two sharks [Carcharias) 
were caught, having Caligus and Echeneis attached. 
Station 263 (Sounding 405), Sandwich Islands to Tahiti (see Chart 38 and 
Diagram 19). 
August 21, 1875 ; lat. 17° 33' K, long. 153° 36' W. 
Temperature of air at noon, 78°*3 ; mean for the day, 76°'5. 
Temperature of water : — 
Surface, . 
10 fathoms, 
20 
30 
40 
50 
60 „ 
70 „ 
80 
90 „ 
100 
110 
120 
130 
140 
150 
160 „ 
170 „ 
Density at 60 ° F. : — 
Surface, . . . 1 '02593 
400 fathoms, . . . 1 '02539 
1000 „ . . . 1-02542 
180 fathoms, 
47-3 
190 
47-0 
200 
46-7 
300 
>> 
43-7 
400 
41-3 
500 
)> 
30-5 
600 
5) 
38-7 
700 
M 
38-2 
800 
37-8 
900 
>) 
37-4 
1000 
37-0 
1100 
36-6 
1200 
?> 
36-3 
1300 
5 ) 
36-0 
1400 
>> 
35-7 
1500 
35-4 
Bottom, 
35-1 
2000 fathoms, 
. 1-02533 
2550 
. 1-02536 
Bottom, 
. 1-02544 
77-5 
77-2 
76-9 
76-0 
73*5 
69-3 
65-5 
62-2 
59-5 
57-2 
55-5 
53-8 
52-5 
51-1 
49-9 
48-9 
48-0 
Depth, 2650 fathoms ; deposit. Volcanic Mud, containing no carbonate of lime (see 
Murray and Renard, Deep-Sea Deposits Chalk Exp.). 
At 4.30 A.M. furled sails. At 6.30 a.m. sounded in 2650 fathoms. At 7 a.m. put 
trawl over with tow-net attached and a tow-net at the weights, and veered 3150 fathoms. 
Obtained serial temperatures down to 1500 fathoms. At 1 p.m. commenced heaving in 
trawl, which came up empty at 3.45 p.m., having apparently never reached the bottom. 
At 4 P.M. made all plain sail. Boatswain birds and gannets (?) were seen. 
Point Venus, Tahiti, distant at noon, 2116 miles. Made good 103 miles. Amount 
of current 10 miles, direction S. 60° W. 
(summary of results chall. exp. — 1893.) 127 
Station 262. 
Station 263. 
