1202 
THE VOYAGE OF H.M.S. CHALLENGER. 
Stahuk 323. Distomum, Tomoptcris, Aimelid larvae (like Balanoglossus), small Planarian, Saphirina 
aud other Copepods, H}'perids, larvm of Sergestes and Lucifer (?) and other Decapod 
larva;, lanthina and other small shells and egg-clusters (of lanthina ?), Atlanta and 
other Heteropods, various species of Pteropods, Appendicularia, Doliolum, and larval 
ti.shes. A tow-net sent down to 150 fathoms yielded a few Oscillatoriaceae, a single 
PulvimiUna, Tomoptcris, and Cypridina. The tow-net at the weights and one of the 
tow-nets at the trawl were full of mud, but the second tow-net at the trawl had very 
little mud in it, and contained many arenaceous and other Foraminifera {Globigerina 
and Pulvimdina menardii), some of the larger specimens of the latter being quite 
surrounded by sarcode, while some of the bottom-living forms (such as Discorbina 
and Rupcrtia) were alive and attached to the surface of Polyzoa and worm-tubes ; the 
tow-net contained besides large living Challengeridse, large Sagittse, red shrimps, and 
other surface aud deep-water organisms. 
Station 324 Station 324 (Sounding 474), Rio de la Plata to Tristan da Cunha (see Chart 16 
and Diagram 6). 
February 29, 1876 ; lat. 36° 
9' S., Ion 
g. 48° 22' W. 
Temperature of air at noon, 67°'0 ; mean for the day, 69°'5. 
Temperature of water : — 
Surface, .... 
71-5 
GOO fathoms, 
38-1 
10 fathoms, . 
69-7 
700 „ 
37-5 
20 „ ... 
69-6 
- 800 „ 
37-0 
30 „ ... 
69-5 
900 „ 
370 
40 „ ... 
G9-3 
1000 „ 
37 0 
50 „ ... 
68-8 
1100 „ 
37-0 
75 „ ... 
G40 
1200 „ 
370 
100 „ ... 
GOO 
1300 „ 
37-0 
125 
5G-5 
1400 „ 
370 
150 „ ... 
53-8 
1500 „ 
37-0 
175 
50-8 
1800 „ 
37 0 
200 „ ... 
48-0 
2000 „ 
3G-0 
225 
450 
2200 „ 
33-3 
250 
42-5 
2400 „ 
32-G 
275 
41-5 
2500 „ ... 
32-6 
300 „ ... 
40G 
2G00 „ 
32-6 
400 „ ... 
39-4 
2700 „ 
32-6 
•100 
38-G 
Ilottom, 
32-6 
Density at GO* F. at surface. 
1 ’02603; bottom, 1*02600. 
Depth, 2800 fathoms; deposit. Blue Mud, containing 4'04 
per cent, of carbonate 
of lime (sec Murray and Renard, Deep-Sea Deposits Chall. Exp.). 
