678 
THE VOYAGE OF H.M.S. CHALLENGER. 
Station 183. 
< IfU.AMMXft FROM 
SCRFACS-Nm. 
Station 184. 
Temperature of water : — 
Surface, . 
78-0 
500 fathoms, 
39-3 
50 fathoms, 
76-2 
600 
38-4 
100 . . 
69-5 
700 „ 
37-9 
150 
61-5 
800 
37-5 
200 „ 
54-5 
900 
37-1 
250 
48-9 
1100 
36-3 
300 
45-0 
1300 
360 
350 
42-& 
1500 
360 
400 
41-2 
Bottom, 
360 
Density at 60° F.: — 
Surface, 
. 1-02630 
300 fathoms, 
. 1-02580 
100 fathoms, 
. 1 02643 
400 „ 
. 1-02596 
200 „ . . 
. 1 02595 
Bottom, 
. 1-02594 
Depth, 1700 fathoms ; deposit, Globigerina Ooze, containing 53 ‘5 7 per cent, of 
carbonate of lime (see Murray and Renard, Deep-Sea Deposits Chall. Exp.). 
At 9 a.m. got up steam. At 11.15 a.m. shortened and furled sails, proceeded under 
steam, and at 12.30 p.m. sounded in 1700 fathoms. Obtained serial temperatures down 
to 1500 fathoms. The carbonic acid was determined in bottom water, and amounted to 
609 milligrammes per litre. At 3 p.m. completed observations and made all plain sail. 
A large shark, apparently different from those taken lately, was hooked, but the line 
carried away. Many stormy petrels and boatswain birds were observed. 
Raine Island distant at noon, 174 miles. Made good 136 miles. Amount of current 
2 miles, direction W. 
Surface Organisms. — The tow-nets yielded the same things as on previous days. 
Station 184 (Sounding 314), Fiji to Raine Island (see Chart 27 and Diagram 13). 
August 29, 1874 ; lat. 12° 8' S., long. 145’ 10' E. 
Temperature of air at noon, 78°‘8 ; mean for the day, 77 0, 1. 
Temperature of water : — 
Surface, .... 77-5 
50 fathom*. . . . 76 6 
76 74-3 
100 70-8 
125 „ ... 66-8 
150 .... 62*5 
176 . . • . 58-2 
200 ... . 54-2 
225 fathoms, . . . 51*0 
250 „ ... 48-0 
300 44-3 
350 42-1 
400 41 0 
500 „ ... 397 
Bottom, . . - . 36-0 
