1004 
THE VOYAGE OF H.M.S. CHALLENGER. 
SriTJo.’t 275. Depth, 2G10 fathoms ; deposit, Red Clay, containing only a trace of carbonate of 
lime (see Murray and Renard, Deep-Sea Deposits Chall. Exp.). 
.\t 1.15 P.M. shortened and furled sails, and got up steam to sound. At 2 p.m. 
sounded in 2610 fathoms. The deposit was of a darker chocolate colour than any hitherto 
obtained, and contained a very large number of crystals of phillipsite formed in situ at 
the bottom. Obtained serial temperatures down to 1500 fathoms. At 5 p.m. completed 
obseiA'ations and made all plain sail. Flocks of terns, man-of-war birds, and gannets 
were seen. 
Distance at noon from Point Venus, Tahiti, 378 miles. Made good 70 miles. 
-\inount of current 9 miles, direction S. 63° W. 
Solenospha^ra megalactis and ChaMengeron willemoesii were observed among the 
Radiolaria in the deposit from this Station. 
nioM 
Syu-Aox Nets. 
Surface Organisms. — The following species of Radiolaria are recorded from the surface 
at this Station : — 
Radiolaria (Haeckel, Zool. pt. 40). Zonaspis cingulata, Haeckel. 
Jlystrichaspis fi'uticata, Haeckel. Sethoconus trochus, Haeckel. 
In addition, the following are recorded in the note-books: — Peridinium, Pyrocystis, 
I )iatoms, Coccosphercs, Coccoliths, Amoeba and small ciliated organisms, Velella, Porpita, 
Physalia, Diphyes, Sagitta, Lepas attached to a piece of wood, on which was also a small 
crab {Xantilograps'ns), Phronimids, Ilalobates, large Carinaria without the head (several 
others were seen from the ship), cuttle-fish, Appendicularia, small Scopelids and other 
fishes. ConypJuvna and fiying fishes were observed. 
•lAT .je .76. Station 276 (Sounding 418), Sandwich Islands to Tahiti (see Chart 38 and 
Diagram 19). 
September 16, 1875 ; lat. 13° 28' S., long. 149° 30' W. 
TcmjKjrature of air at noon, 73°'8 ; mean for the day, 76°’4. 
Temj»craturc of water: — 
•Surf«cc, . 
80-0 
1 0 fathoniH, 
78-9 
‘.'0 ., 
78-8 
30 
78-7 
40 .. 
78-6 
50 fathoms. 
78-4 
60 „ 
78-2 
70 „ 
77-7 
80 „ 
76-4 
00 „ 
75-1 
