330 
THE VOYAGE OF H.M.S. CHALLENGER. 
Station 104. 
Organisms prom 
Surface- N trre. 
Surface Organisms. — The following species are recorded from the tow-nets sent down 
to 100 fathoms : — 
Copepoda (Brady, Zool. pt. 23). 
Saphirina metaUina, Dana. 
Amphipoda (Stebbing, Zool. pt. 67). 
Oxycephalus clausi, Bovallius. 
Schizopoda (Sars, Zool. pt. 37). 
Thysanopodci tricuspulata, M. -Edwards 
(larval form). 
Two or three hauls of the tow-net were taken at about 100 fathoms, and the net was 
: :il <•;' pelagic animals, while at the same time almost nothing was got at the surface. In 
addition to the animals noted yesterday, Lucifer was present in abundance, young speci- 
mens of Tomopteris, several specimens of Alciopa, and a Copepod with feathered setae on 
the furca. 
Moseley writes : “ Yesterday and to-day Murray put down the surface-net to 100 
fathoms. The result was most satisfactory, for the net was full of animals such as are 
caught on the surface at night, while a similar net on the actual surface yielded next to 
nothing. The water was perfectly swarming with living animals. It is a great step to 
have discovered where the surface animals that one catches occasionally at night are to 
l>e obtained, and where they live constantly, during the day.” 
Station 105 (Sounding 176), St. Vincent to St. Paul’s Rocks (see Chart 12 and 
Diagram 4). 
August 24, 1873 ; lat. 2° 6' N., long. 22° 53' W. 
Temperature of air at noon, 77°‘5 ; mean for the day, 76°'2. 
Temperature of water : — 
Surface, . . 
78*0 
400 fathoms, 
41 0 
100 fathoms . 
56-0 
500 „ 
40-4 
200 „ . . 
460 
Bottom, 
36 0 
300 „ . . 
42-8 
Density at 60° F. at surface, 1*02604. 
Depth, 2275 fathoms; deposit, Globigerina Ooze. 
At 4.5 I'.w. shortened and furled sails, and got up steam to sound. At 5 p.m. sounded 
hi 2275 fathom-. Tried a new* disengaging apparatus — working by means of aslot without 
pring- but it failed to disengage the weights, which were brought to the surface. 
