25B 
THE VOYAGE OF H.M.S. CHALLENGER. 
*r*n »* 67. Temperature of water : — 
Surface, . 
700 
900 fathoms 
100 fathoms, . 
63-6 
1000 
200 
608 
1100 
300 
601 
1200 „ 
400 „ 
55 0 
1300 
500 „ 
47 0 
1400 
600 
42-5 
1500 
700 
400 
Bottom, 
800 
38 9 
1 
38-5 
383 
38T 
37-9 
37-7 
37-5 
37-3 
36-3 
Density at 60° F. at surface, 1*02699 ; bottom, 1*02614. 
Depth, 2700 fathoms ; deposit, Globigerina Ooze, containing 54*30 per cent, of 
carbonate of lime {see Murray and Renard, Deep-Sea Deposits Chall. Exp.). 
\t 11.30 a. m. shortened and furled sails, and got up steam to sound, and at noon pro- 
,1 under steam. At 1 p.m. sounded in 2700 fathoms. At 2 p.m. obtained a series of 
• pi natures at intervals of 100 fathoms down to 1500 fathoms. Sent down slip water- 
, „ rl, m d obt ined sample of bottom water. The carbonic acid was determined in the 
> ur faeo water, and amounted to 52*9 milligrammes per litre. At 4 p.m. completed 
observations, and at 4.10 p.m. made all plain sail. 
Distance from Fayal at noon, GOG miles. Made good 168 miles. Amount of current 
22 miles, direction N. 43° W. 
Kt*ri"S> 6s. 
Station 63 (Sounding 132), Bermuda to Azores (see Chart 6 and Diagram 3). 
June 24, 1873 ; lat. 38° 3' N., long. 39° 19' W. 
Temperature of air at noon, 72 *5 ; mean for the day, 71 *2. 
Temperature of water at surface, 70 *0 ; bottom, 36 ‘2. 
Density at 60 F. : — 
Surface, . . . 1 -02688 500 fathoms, . . 1*02605 
150 fathom*, . . 1 02681 Bottom, . . 1‘02612 
250 „ . 1 02645 
Depth, 2175 fathoms; deposit, Globigerina Ooze, containing 71*76 per cent, of 
carbonate of lim«* (see Murray and Renard, Deep-Sea Deposits Chall. Exp.). 
At 9.20 a.m. shortened and furled sails, and got up steam to trawl and sound. At 
10 v.m. put trawl over, and at 12.30 p.m. sounded in 2175 fathoms. At 4.45 p.m. trawl 
cam* ip with a few specimens. The carbonic acid was determined in the bottom water, 
and amounted to 53*6 milligrammes per litre. 
