THE VOYAGE OF H.M.S. CHALLENGER. 
Statiox 7*2. 
Oroaxismb fbom 
thk Deposit. 
Statiox 73 
264 
Temperature of water : — 
Surface, . ... 
71-0 
500 fathoms, 
45-2 
25 fathoms, 
64*2 
600 „ 
43-2 
50 ... 
634 
700 „ 
41*3 
1 5 ,, . . . 
62-6 
800 „ 
40-0 
100 
61-8 
900 „ 
39-2 
200 „ . . . 
57-7 
1000 „ 
38-5 
300 „ 
52-5 
1100 „ 
38-1 
400 ... 
480 
Bottom, 
37*8 
Density at 60° F. at surface, 
1*02718. 
Depth, 1240 fathoms; deposit, Pteropod Ooze, containing 81*59 per cent, of 
carbonate of lime (see Murray and Rcnard, Deep-Sea Deposits Chall. Exp.). 
At 4 p.m. shortened and furled sails, and got up steam to sound. At 4.30 p.m. 
sounded in 1240 fathoms. Obtained a series of temperatures down to 1100 fathoms. 
At 6.30 p.m. completed observations, and at 6.40 p.m. made all plain sail. 
Distance from Fayal at noon, 210 miles, and from Flores, 114 miles. Made good 73 
miles. Amount of current 15 miles, direction N. 57° E. 
Diatom ACEvE. — The following species of Diatoms were observed by Mr. Comber in the 
deposit from this Station, and shells of Teliina are recorded in the Station-book (see also 
Murray and Renard, Deep-Sea Deposits Chall. Exp.) : — 
NitzscJiia marina, Gruuow. 
Gram mat nphora serpentina, Ehrenberg. 
Hemidiscus Cuneiform is, Wallicb. 
Coscinodisetu excentricus, Ehrenberg. 
„ lineatus, Ehrenberg. 
„ iumidus, Janisch. 
„ curvatulus, Grunow. 
Coscinodiscus nodulifer, Janisch. 
„ decrescens, Grunow. 
,, radiatm, Ehrenberg. 
,, afvic.anus, Janisch. 
Ethmodiscu* sp. (?). 
Asteromphalus broolcei, Bailey. 
Badenastrum varians , Lauder. 
Station 73 (Sounding 137), Bermuda to Azores (see Charts 6 and 10, and 
Diagram 3). 
June 30, 1873 ; lat. 38 30' N., long. 31° 14' W. 
Temperature of air at noon, 
68°*8 ; mean for the day, 68°*5. 
Temperature of water : — 
Surface, .... 
69 0 
600 fathoms, 
43*4 
100 fathoms, 
69-8 
700 „ . . . 
420 
200 „ . . . 
57 0 
800 „ . . . 
41-0 
300 „ . . 
54 0 
900 „ . . . 
40-0 
400 „ . . . 
490 
Bottom, 
394 
500 
45-5 
