S84 
THE VOYAGE OF H.M.S. CHALLENGER. 
Station 226. 
Organisms prom 
Surpace-N bts. 
Station 227. 
Surface Organisms. — The following are recorded in the note-books from the surface 
at this Station : — Pyrocyatia, Diatoms, Peridinium (Ceratium) tripos and another 
species (in catena), Oscillatoriaceae, Glohigerina, Orhdina, Hastigerina, Pulvinxdina, 
many varieties of Radiolaria, Medusje, several varieties of Siphonophorae, Echinoderm 
larvae, Sagitta, Alciopa, tubicolous and other small Annelids, Cypridina (three species), 
Copilia, Setella, iSaphinna, Phronimids, Hyperids, Squilla larvae, Euphausia, Lnicifer, 
PhyUosortui, Amphion, portion of antenna of a deep-sea shrimp, Halobates, small 
Lamellibranchs and Gasteropods, Phylliro'c, Atlanta, Spongiohranclisea and other 
Pteropods, CjTnbulian larvae, Doliolum, SaLpa, small Pyrosoma (from trawl), small fishes. 
Many Hying fishes {Exocoetus) and a shark were seen ; a tow-net was carried away 
by a shark. 
About a dozen each of Pyrocystis noctiluca and Pyrocystis fusiformis were earefuUy 
separated from other things and placed in two globes, each globe containing only the 
same variety, and after dark were examined for phosphorescence. When the water was 
disturbed several very brilliant spots of light appeared in both globes, and no difference 
in the natmc or intensity of the light could be detected. They lost their light more or 
less after being disturbed several times in succession, but when allowed to rest for an 
hour or so they were again as bright as at first. 
Station 227 (Sounding 365), Admiralty Islands to Yokohama (see Chart 31 and 
Diagram 16). 
March 27, 1875 ; lat. 17° 29' N., long. 141° 21' E. 
Temperature of air at noon, 
79°'5 ; mean for the day, 78°'5. 
Temperature of water : — 
Surface, . . . . 
79-2 
180 fathoms, 
60-4 
10 fathoms, 
79-0 
190 „ ... 
58-8 
20 „ . . . 
78-H 
200 „ ... 
57-0 
30 
78-6 
300 „ ... 
46-2 
40 
78-4 
400 „ ... 
42-0 
00 . . . 
78-2 
500 „ ... 
40-3 
60 
78-0 
600 „ ... 
39-0 
70 „ . . . 
77‘G 
700 „ 
38-3 
«o 
76-5 
800 „ ... 
37-8 
90 „ . . . 
75-0 
900 , ... 
37-3 
100 „ . . . 
73-3 
1000 „ ... 
36-8 
110 
71-5 
1100 „ ... 
36-3 
120 „ . . . 
700 
1'200 „ ... 
35-9 
130 
68 -3 
1300 „ ... 
35-5 
140 „ . . . 
66-7 
1400 „ ... 
35-2 
150 
65-2 
1500 „ ... 
35-2 
100 
63 5 
Bottom, 
35-2 
170 „ . . . 
020 
