1-J5C 
THE VOYAGE OF H.M.S. CHALLENGEK. 
Station 34S. 'Phe tow-nets at tlie surface and down to 200 fathoms yielded an abundant harvest, 
including : — Many Oscillatoriacem, Pcridinium, Pyrocystis, Diatoms, Glohigerina, 
Orhnlina, Ilajitigo'ina, PuIIenia, Sphxroidina, Pulvinulina, Acanthometrse, Polycystinse, 
i'hallengerida?, and compound Radiolaria, Medusm, Siphonophorae, Echinoderm larvae 
(Bipinnaria), Sagitta, Alciopa, Tomoptens, Distomum parasitic on Sagitta, Cypridina, 
various Copepods, Ilyperids, Rhahdosoma, Lucifer, Gasteropod shells, Atlanta, Acura 
jtclagicu, various Pteropods, larvm of Cymbulia (?) and Pleuropus [_= Cavolinicb\, 
Api wndiculnna, Dolioliun, and larval fishes. The sarcode of a large number of 
Spinvroidinie was carefully examined, and frequently there were observed in the interior 
of the shells two large cells, some of them with a coarse granular appearance and others 
very much more minutely granular, but no conclusion was arrived at concerning their 
function or origin. Several sharks were about the ship, with suckers and pilot fishes, 
and two were caught. 
Station 349. Station 349 (Sounding 499), Ascension Island to St. Vincent (see Chart 12). 
April 10, 1876 ; lat. 5° 28' N., long. 14° 38' W. 
Temperature of air at noon. 
80°'3 ; mean for the day, 81°’9. 
Temperature of water : — 
Surface, 
83-5 
110 fathoms. 
55 -2 
10 fathoms, 
82-2 
120 „ 
54-6 
20 „ . . . 
70-0 
130 
54-0 
30 „ . . . 
62-6 
140 
53-3 
40 „ . . . 
60-2 
150 
52-4 
.30 
59-2 
160 
52-1 
60 „ . . . 
58-5 
170 „ 
51-4 
70 ., . . . 
57-8 
180 
50-8 
80 
57-1 
190 
50-1 
90 „ . . . 
100 . . . 
56-5 
.55-9 
200 
49-5 
I len.sity at 60° F. : — 
Surface, 
1 02616 
100 fathoms, . 
. 1 02620 
25 fathoms, 
1 026.30 
200 „ 
. 1-02599 
50 
1 02624 
300 „ . . 
. 1-02583 
At G A.M. a waterspout began to form about 8 miles to the S.W. and continued, 
var)'ing in size, until 7.20 a..m. when it gradually disappeared; it was only joined for 
a few minuU-s. At 1.25 p.m. stopped and took serial temperatures down to 200 fathoms, 
alKiut 25 miles to the S.E. of Station 101, August 19, 1873. At 2.50 p.m. proceeded, 
t'ajie Verde distant at noon, 588 miles. Made good 130 miles. 
