SUMMARY" OF RESULTS. 
Density at 60° F. : — 
Surface, 
. 1-02611 
300 fathoms, . 
. 1-02603 
100 fathoms, 
. 1-02676 
400 „ 
. 1-02630 
200 „ 
. 1-02603 
Bottom, 
. 1-02601 
Depth. 2450 fathoms ; deposit, Red Clay, containing about 1 percent, of carbonate 
of lime (see Murray and Renard, Deep-Sea Deposits Chall. Exp.). 
At 6 a.m. shortened and furled sails and got up steam. At 7 a.m. sounded in 
2450 fathoms. At 8 a.m. obtained serial temperatures down to 1500 fathoms. At 
10 a.m. completed observations, and at 10.20 a.m. made all plain sail. The carbonic 
acid was determined in bottom water, and amounted to 43 ‘4 milligrammes per litre. 
Raine Island distant at noon, 579 miles. Made good 138 miles. Amount of current 
7 miles, direction N. 44° W. 
Surface Organisms — The following were taken in the tow-nets sent down to about 
20 fathoms : — Pyrocystis , Globigerina, Orbidina, Pullenia, Pulvinulina menardii, 
Acanthometra, many forms of Siphonophorse, Echinoderm larvae, Sagitta, Alciopa and 
other Annelids, Aphroditacean larvae, larvae of Balctnoglossus, Cypridina , Saphirina, 
many Crustaceans and larvae, larval Lamellibranchs, Atlanta, Pteropods and larvae, small 
blue Salpse, AppmdAcidciria. The sarcode in Pullenia was bright red, sometimes 
surrounding the shell, and in one case a Coscinodiscus was noticed in it. 
Station 181 (Sounding 311), Fiji to Raine Island (see Chart 27 and Diagram 13). 
August 25, 1874 ; lat. 13° '50' S., long. 151° 49' E. 
Temperature of air at noon, 78°\3 ; mean for the day, 7 7° ’2. 
Temperature of water at surface, 80 o, 0 ; bottom, 3 5° ‘8. 
Density at 60 F. at surface, 1 '02649 ; bottom, 1 '02591. 
Depth, 2440 fathoms ; deposit, Red Clay, consisting of two layers, the upper 
containing 6' 42 and the lower 32 '28 per cent, of carbonate of lime (see 
Murray and Renard, Deep-Sea Deposits Chall. Exp.). 
At 11 a.m. got up steam. At 11.30 a.m. shortened and furled sails and proceeded 
under steam to sound and trawl. At 1 p.m. put trawl over, and veered 3000 fathoms. 
At 2 p.m. sounded in 2440 fathoms. The carbonic acid was determined in water from the 
surface, and amounted to 35 '6 milligrammes per litre. At 5 p.m. commenced heaving 
in trawl, which came up at 7.45 p.m. with a few specimens and some pumice-stones 
Station 180. 
Organisms from 
Surface-Nets. 
Station 181. 
