380 
THE VOYAGE OF H.M.S. CHALLENGER. 
Station 129 . 
Temperature of water 
Surface, 
o 
o 
800 fathoms, . 
37-3 
75 fathoms, . 
65-9 
900 „ 
371 
100 „ . . 
63-2 
1000 „ 
36-9 
200 „ 
51-5 
1100 „ 
36-7 
300 „ 
43-5 
1200 „ 
36-5 
400 „ . . 
40-1 
1300 „ 
36-3 
500 „ 
38-8 
1400 „ 
36-1 
600 „ 
381 
1500 „ 
36-0 
700 „ 
37-7 
Bottom, 
34-2 
Density at 60° F. : — 
- 
Surface, 
. 1-02759 
200 fathoms, 
. 
. 1 02735 
50 fathoms, . 
. 1-02738 
300 „ 
. 1 02560 
100 „ 
. 1 02738 
400 „ 
4 
. 1 02733 
Depth, 2150 fathoms ; deposit, Globigerina Ooze, containing 46'43 per cent, of 
carbonate of lime (see Murray and Benard, Deep-Sea Deposits Chall. Exp.). 
At G.30 a.m. shortened and furled sails, and got up steam to sound and dredge. At 
7.30 a.m. sounded in 2150 fathoms. At 8.30 a.m. put dredge over. At noon obtained 
-■.rial temperatures at intervals of 100 fathoms down to 1500 fathoms. The carbonic 
acid was determined in water from 100 fathoms, and amounted to 36'0 milligrammes 
per litre ; owing to a fault in the new water-bottle this was probably surface water. 
At 3.30 r.M. commenced heaving in dredge, but at 4.10 p.m. the dredge-rope carried away, 
and dredge, weights, &c., were lost. At 4.20 p.m. made all plain sail. 
Distance at noon from Tristan da Cunha, 1572 miles. Made good 70 miles. 
Amount of current 22 miles, direction S. 5° W. 
Omanisxc raou 
ScRfAC* Nrr*. 
Surface Organisms. — The following species is recorded from the surface in this 
locality 
Amphipoda (Stebbing, Zool. pt. 67). 
Srind cornigera (M. -Edwards). 
\ little phosphorescence was observed during the night of September 29-30, and two 
Ij.iul • with the tow-net produced a few Pyrocystis and Foraminifera, Physalia, Diphyes , 
Gl< ! Inojxt, Phronimri, Ilyperia , larvae of Squilla, Euphausia, Zoeae, many specimens 
of Ilalobate*, Phylliroe , Glaucus, and Hyiug-fish. 
Willoino' -Sulim writes : “ The tow-net procured several specimens of Ilalobates, the 
marine representative of IJydrometra so well known from the surface of our ponds ; 
'hep another marine Hemipter, Bclostoma , the representative of Nepa, which we have 
