SUMMARY OF RESULTS. 
403 
Density at 60° F. at surface, 1 ‘02631 ; bottom, 1*02580. 
Depth, 2650 fathoms; deposit, Red Clay, containing 26*22 per cent, of carbonate 
of lime (see Murray and Rcnard, Deep-Sea Deposits Chall. Exp.). 
At 7.30 a.m. shortened and furled sails, and got up steam to sound. At 8 A.M. 
proceeded under steam, and at 9 a.m. sounded in 2650 fathoms. Obtained serial 
temperatures at intervals of 50 fathoms down to 500 fathoms. At 11.30 a.m. completed 
temperature observations, and at 11.45 a.m. made all plain sail. 
Distance at noon from Cape of Good Hope, 519 miles. Made good 135 miles. 
Amount of current 10 miles, direction S. 38° E. 
Diatomacea;. — The following species of Diatoms were observed by Mr. Comber 
in the deposit from this Station (see also Murray and Renard, Deep-Sea Deposits Chall. 
Exp.):— 
Nitzschia marina, Grunow. 
Goscinodiscus lineatus, Ehrenberg. 
„ lentiginosus, Janisch. 
„ atlanticus, Castracane 
„ curvatulus, Grunow. 
The siliceous organisms in this deposit do not make up more than one or two 
per cent, of this Red Clay, and more than half the Diatoms belong to Coscinodiscus 
lentiginosus , a species common in the Antarctic Diatom Ooze. 
Surface Organisms. — The following species is recorded from the surface (attached to a 
floating spar) on October 24 *. — 
Cirripedia (Hoek, Zool. pt. 25). 
Lepas anatifera , Linne. 
The specimens of Lepcis anatifera were extremely large, and among them the common 
Atlantic Idothea was found. 
Coscinodiscus centralis, Ehrenberg, var. 
„ elegans, Greville. 
Hemidiscus cuneiformis, Wallich. 
Actinoptychus splendens, Ralfs. 
Station 139 (Sounding 229), Tristan da Cunha to Cape of Good Hope (see 
Chart 16 and Diagram 6). 
October 27, 1873 ; Jat. 35° 35' S., long. 16 9' E. 
Temperature of air at noon, 54°*3 ; mean for the day, 53°*6. 
Station 138. 
Organisms from 
the Deposit. 
Organisms from 
the Surface. 
Station 139. 
