1004 
THE VOYAGE OF H.M.S. CHALLENGER. 
Station 2S7. ScHiZOrODA (Sars, Zool. pt. 37). 
Sinella thowpsoiii (M.-Edwards). 
Trxic.\TA (Ilerdman, Zool. pt. 76). 
Doliolum affine, n.sp. 
Salpa costata-tilesii, Quoy and 
Gaimard — Cuvier. 
Fishes (Giintlier, Zool. pt. 78). 
Scopelus coccoi (Cocco). 
In addition, the following are recorded in the note-books: — An immense number of 
Coccospheres of all varieties, a few Rhabdospheres, Alciopa and other Annelids, Hyperids, 
Atlanta, Ptoropods, and Appendiculama. Tow-nets were sent down to 200 fathoms, 
but the line parted when hauling in. 
Station 28 S. Station 288 (Sounding 433), Tahiti to Valparaiso (see Chart 38, and 
Diagrams 19 and 20). 
October 21, 1875 ; lat. 40° 3' S., long. 132° 58' W. 
Temperature of air at noon, 55°‘0 ; mean for the day, 53°‘0. 
Temperature of water : — 
Surface, . 
25 fathoms. 
50 
75 
fi 
100 
II 
125 
II 
150 
II 
175 
II 
200 
II 
225 
II 
250 
It 
275 
If 
300 
II 
54-5 
400 fathoms. 
54-2 
500 
51-1 
600 „ 
50-6 
700 „ 
49-8 
800 „ 
48-3 
900 „ 
47-1 
1000 
46-1 
1100 „ 
45-2 
1200 
44-7 
1300 „ 
44-2 
1400 
43-8 
1500 „ 
43-3 
Bottom, 
41-9 
41-0 
40-0 
39-0 
38-2 
37-5 
36-9 
36-5 
36-1 
35-9 
35-7 
35-5 
34-8 
Dcn.sity at 60° F. at surface, 1 ‘02561 ; 2125 fathoms, 1 ‘02573 ; bottom, 1 ‘02564. 
Depth, 2600 fathoms ; deposit. Red Clay, containing only a trace of carbonate of 
lime (see Murray and Rcnard, Deep-Sea Deposits Chall. Exp.). 
At 5 A.M. shortened and furled sails, and proceeded under steam to sound. At 6 a.m. 
sounded in 2600 fathoms. In this instance the sounding-tube had buried itself about 
eighteen inches into the deposit, and the section brought up was of a uniform red colour 
throughout, there Iwing no evidence of different layers varying in composition, as 
indicated in some of the last few soundings. Obtained serial temperatures down to 
