SUMMARY OF RESULTS. 
1133 
Temperature of water ; — 
Surface, . 
59-5 
125 fathoms. 
48-4 
25 fathoms, 
57-4 
150 
>) • 
46-5 
50 „ . . 
55-2 
175 
99 
45-2 
75 „ . . 
52-8 
200 
99 
44-2 
100 „ 
50-5 
300 
99 
42-0 
Density at 60° F. : — 
Surface, 
. 1-02539 
100 fathoms. 
. 1-02517 
25 fathoms, 
. 1-02521 
200 
99 
. 1-02521 
50 „ 
. 1-02519 
300 
99 • 
. 1-02521 
Depth (1800 fathoms). 
At 11.15 A.M. shortened and furled sails, proceeded under steam, and obtained 
temperatures down to 300 fathoms. At 1 p.m. completed temperatures and proceeded 
under steam and sail. Diomedea exulans, Diomedea melanophrys (?), Procellaria 
maxima, mutton birds, and Thalassidromas were seen. 
Cape Tres Montes distant at noon, 684 miles ; distance from Station 297, of 
November 11, 1875, 45 miles due E. Made good 40 miles. Amount of current 13 miles, 
direction N. 18° E. 
Surface Organisms. — The tow-nets gave : — Glohigerina, Orbulina, Hastigerina, 
Acanthometrm and other Radiolaria, Siphonophorse, Copepods, Salpse, &c. 
Station 302 (Sounding 447), Valparaiso to Gulf of Penas (see Chart 40 and 
Diagram 21). 
December 28, 1875 ; lat. 42 43 S., long. 82 11' W. 
Temperature of air at noon, 55°‘8 ; mean for the day, 53°‘5. 
Temperature of water : — 
Surface, .... 
55°-0 
25 fathoms. 
52-5 
50 
)) ... 
49-5 
75 
99 ... 
47-5 
100 
99 ... 
45-8 
125 
99 ... 
44-3 
150 
99 ... 
43-5 
175 
)) .... 
43-0 
200 
99 ... 
42-5 
225 
)) ... 
42-1 
250 
99 ... 
41-8 
275 
99 ... 
41-5 
(summary of 
RESULTS CHALL. EXP.- 
-1893.) 
300 fathoms, 
41-1 
400 
40-1 
500 
39-1 
600 „ 
38-2 
700 „ 
37-5 
800 
36-9 
900 „ 
36-5 
1000 
36-2 
1100 
36-0 
1200 
35-9 
1300 
35-8 
Bottom, 
• 
35*6 
Station 301. 
Organisms prom 
Surface-Nets. 
Station 302. 
