916 
THE VOYAGE OF H.M.S. CHALLENGER. 
Station 234. 
Organisms from 
Surface-Nets. 
Surface Organisms. — The following species are recorded from the surface at this 
Station : — 
Radiolaria (Haeckel, Zool. pt. 40). 
Ileliosphwra castanella, Haeckel. 
Scthoconus trochus, Haeckel. 
Theocampe cryptoprora, Haeckel. 
Auloceros furcosus, Haeckel. 
Sagoplegma pyramidophora, Haeckel. 
Medusetta quadrigata, Haeckel. 
Castanissa croshiei, Haeckel. 
In addition, the following are recorded in the note-books from the surface and down 
to a depth of 60 fathoms : — Very many Noctiluca at the surface, nearly all with prey inside 
and more or less collapsed, unlike in this respect the quite spherical specimens taken 
while at anchor at Oosima ; Noctiluca was less abundant in the deep haul ; Pyrocystis, 
very few at the surface, more abundant in deep haul ; Peridinium tripos {in catena) and 
another species; Diatoms {Coscmodiscus, &c.); Glohigerina, Orhulina, Hastigerina ; 
Vorticella (on Diatoms) and other Infusoria ; Medusae, Siphonophorae, Ophiurid larvae, 
Sagitta, Annelid larvae, Planarian larvae, Daphnia, Cypridina, Setella, Calanids, and 
other Copepods, Phronimids, Euphausia, Lucifer, Crustacean and other eggs, Zoeae, small 
Gasteropods and Lamellibranchs, Atlanta, Pteropods and larvae, Appendicularia, 
Doliolum. The hauls from the surface appeared to indicate a mixture of shallow-water 
(neritic) and pelagic organisms, and the presence probably of brackish water, while the 
deeper haul was much more oceanic in character. 
Station 235. Station 235 (Sounding 376), off Japan (see Chart 35). 
June 4, 1875 ; lat. 34° 7' N., long. 138° 0' E. 
Temperature of air at noon, 69° '8 ; mean for the day, 69° ’4. 
X — ^ 
Temperature of water : — 
~ 7 ' 
j 7 — - — - 
Surface, .... 
730 
125 fathoms. 
Q 
57-7 
25 fathoms, 
71-2 
150 „ 
54-7 
50 „ . . . 
66-4 
175 „ 
51-5 
75 „ . . . 
63-5 
200 
48-0 
100 „ . . . 
GO -5 
Bottom, 
38-1 
Density at 60° F. at surface, 1 ‘02557 ; bottom, 1 ’02560. 
Depth, 565 fathoms ; deposit, Green Mud, containing aliout 5 per cent, of carbonate 
of lime (sec Murray and Rcnard, Deep-Sea Deposits Chalk Exp.). 
At 8.30 A.M. observed land about Cape Sima on the port quarter. At 4 p.m. stopped 
and sounded in 565 fatliora.s. Put over trawl, which came up at 7.30 p.m. with many 
