12*28 
THE VOYAGE OF H.M.S, CHALLENGER 
Station 336 . 
Organ ISMS from 
Scrfacr-Nbts. 
Station 337 . 
I' . . t 
Di.stnnce at noon from Ascension, 1182 miles. Made good 167 miles. No current 
observed. 
Surf^e Organisms. — Two hauls of the tow-net near the surface yielded much the 
same kind of things as at the previous Station, including Pyrocystis, Sagitta, Copepods, 
and Lucifei'. 
Station 337 (Sounding 487), Tristan da Cunha to Ascension Island (see Chart 16 
and Diagram 7). 
March 19, 1876 ; lat. 24° 
38' S., long. 
13° 36' W. 
Temperature of air at noon, 78°’8 ; mean for the day, 74°‘9. 
Temperature of \vater : — 
Surface, . 
o 
77-0 
275 fathoms, 
49-5 
25 fathoms, 
72-0 
300 „ 
48-0 
50 „ . . 
68-2 
400 
42-0 
75 „ . . 
651 
500 
39-3 
100 „ . . 
63 0 
600 
38-7 
125 „ 
61-0 
700 
38-4 
150 „ 
590 
800 
38-1 
175 „ 
57-0 
900 
37-9 
200 „ 
55-0 
1000 
37-7 
53-1 
Bottom, 
37-2 
2.50 „ 
51-2 
Density at 60° F. : — 
Surface, 
. 1 02704 
100 fathoms. 
. 1-02649 
25 fathoms, 
. 1 02707 
Bottom, 
. 1-02639 
.50 „ . . 
. 1-02658 
Depth, 1240 fathoms; deposit, Pteropod Ooze, containing 98'47 per cent, of 
carbonate of lime (see Murray and Renard, Deep-Sea Deposits Chall. Exp.). 
At 11.30 A.M. shortened and furled sails, and proceeded under steam to sound. At 
noon sounded in 1240 fathoms. Put large dredge over and veered 1600 fathoms. Took 
serial temperatures down to 1000 fathoms. At 4 p.m. commenced heaving in dredge, 
which came up at 5.30 p.m., having probably been only a short time in contact with 
the liottom ; the bag contained a very small quantity of the deposit. Made sail. 
Distance at noon from Ascension, 1002 miles. Made good 182 miles. Amount of 
current for the last two days 27 miles, direction S. 51° W. 
The following speries is recorded from this Station : — 
Fi.shks (Cliinther, Zool. pt. 57). 
Gonostoma microdon, n.sp. t)ne specimen ; for distribution see Station 23. 
