12G4 
THE VOYAGE OF H.M.S. CHALLENGER. 
April 26 m 29, 
1876. 
.‘Station 363. 
small lanthinfe, Atlanta, Ileterofusus \^ = Limacina\ Pleuropus \_= Cavolinki], and 
other Pteropods, Spirula shells (with Lepas attached) and other Cephalopods, Doliolum, 
Appendiailaria, Salpa (with - Coccospheres, Rhabdospheres, Peridinium, small 
Acanthometne, and large orange-coloured cells in the stomachs), Leptocephalus, Scopelids, 
flying fishes and young, and other small fishes. The eyes of the larval Euphausiae were 
the chief cause of phosphorescence ; one Copepod gave off’ light from several parts of 
its body when irritated, and sometimes the eyes of the Megalopae gave off a little light, 
as did also Tornaria. Several large balls of phosphorescence went past the ship 
«>ccasionally in the evening, evidently Pyrosomae, while large flashes were seen 
apparently pretty fiir down in the water, which may have been caused by fishes. 
Station 353 (Sounding 503), St. Vincent towards Azores (see Chart 6 an<l 
Diagram 7). 
May 3, 1876 ; lat. 26° 21' N., long. 33° 37' W. 
Temperature of air at noon. 
Temperature of water : — 
70°‘0 ; mean for the day, 69°T. 
Surface, . 
70-7 
190 fathoms. 
59-4 
10 fathoms, 
69-7 
200 „ . . 
58-8 
20 „ 
690 
225 „ 
57-4 
30 „ 
68-2 
250 „ 
56-1 
40 „ 
67-6 
275 „ 
55-0 
30 „ 
67-1 
300 
53-9 
60 „ 
66-5 
400 „ 
49-5 
70 „ 
660 
500 
46-3 
o 
00 
65-4 
600 
43-5 
90 „ 
64-9 
700 „ 
41-5 
100 „ 
64-3 
800 „ 
40-3 
110 „ 
63-8 
900 „ 
39-7 
120 „ 
63-2 
1000 
39-2 
130 „ 
62 7 
1100 
38-8 
NO „ 
62-1 
1200 „ 
38-5 
150 „ 
61-6 
1300 
38-2 
160 „ 
61 0 
1400 
37-9 
170 „ 
60-5 
1500 
36-6 
IHO „ 
59 9 
Bottom, 
36 6 
Density at 60° F.: — 
Surface, . 
1 02768 
300 fatliom.®. 
. 1-02691 
25 fathoms, 
, , 
1 02753 
400 „ 
. 1-02636 
50 
1-02736 
2500 
. 1-02678 
KKJ .. 
200 „ 
1-02712 
1 -02683 
Bottom, 
. 1-02708 
