968 
THE VOYAGE OF H.M.S. CHALLENGER. 
Station 247. which are abundant in the deposits, but which are only rarely taken in the surface-nets. 
In addition to the above, the following are recorded in the note-books : — Diatoms, 
Peridinium {Ceratium) tripos, Glohigerina, Orhulina, Hastigerina, Pulvinulina, 
Medusje, Agalmopsis and other Siphonophorae, Sagitta, tubicolous Annelids, Cypridina, 
Saphirina and other Copepods, Archizoea, Anchylomera, Phronimids, Vibilia, Bopyrus, 
Euphausia, Siriella, Ethella, Atlanta, Cuvierina and other Pteropods and larvae, Salpa, 
AppendiculaHa. Small blue Salpas, Saphirina, Cirriped Zoeae, Cypridina, and Orhulina 
were especially abundant. Pyrocystis was apparently absent from the surface since 
June 24 (Station 242). 
Statio.n 248. station 248 (Sounding 390), Yokohama to Sandwich Islands (see Chart 36 and 
Diagram 18). 
July 5, 1875 ; lat. 37° 41' N., long. 177° 4' W. 
Temperature of air at noon, 73°‘3 ; mean for the day, 7l°'l. 
Temperature of water : — 
Surface, . 
69-2 
300 fathoms. 
42-0 
10 fathoms, 
62-9 
400 „ 
39-6 
20 „ . . 
60-2 
500 „ 
38-0 
30 „ 
57-5 
600 „ 
37-1 
40 „ . . 
55-5 
700 „ 
36-5 
50 „ . . 
54-5 
800 „ 
36-2 
75 „ . . 
.53 0 
900 „ 
36-0 
100 „ 
51-6 
1000 „ 
35-8 
125 „ 
50-2 
1100 „ 
35-6 
150 „ 
490 
1200 „ 
35-4 
175 „ 
47-8 
1300 „ 
35-2 
200 „ . . 
46-5 
1400 „ 
351 
225 „ 
45-2 
1500 „ 
35-1 
250 „ 
275 „ 
440 
430 
Bottom, 
351 
Density at 60° F. : — 
Surface, . 
. 1 02.573 
200 fathoms. 
. 1-02525 
25 fathoms, 
. 1 02548 
300 „ 
. 1-02520 
50 „ 
. 1 02547 
400 „ 
. 1-02522 
100 „ 
. 1 02537 
2475 „ 
. 1-02517 
Depth, 2900 fathoms ; deposit. Red Clay, containing only a trace of carbonate of 
lime (see Murray and Renai’d, Deep-Sea Deposits Chalk Exp.). 
At 4.40 AM. stopped, j»ut trawl over, and veered 3000 fathoms. At 6 a.m. brought 
