CHAP. IIL. ] TENERIFFE TO SOMBRERO. 173 
SUUBIEK C2, aS teenaeen drs cio ate lta Oe S0OMathoms! sae oD io. 
NO RAINE Soo eocaaore Ie 900 le Pel beyon ph rn cet a Oe eT 
200 ee Se tein aloes 1000 a AE ee 
300 ty Soe eee lS O 1100 - chlaelG  ee Ae R a 3 °8 
400 ae Vidor Rae Guelise ei 5 1200 SY Br seep eye? ore 3 °5 
500 ee erases 6 CO 13800 Po AME Svodeys tecaaions Sil 
600 ce MA wees. MOEN 1400 ie eee oat nG renal) 
700 US? WV Nati Aaa Neer 6 2 1500 See 1, Mathore Seve RS 2 6 
The dredge was not used, but, as is our custom whenever the 
rate of the ship is such as to make it practicable, a large tow-net 
was put out astern. We procured a number of specimens of 
the remarkable surface annelid Alciope, with large, deeply pig- 
mented eyes; and a number of the delicate, transparent crusta- 
ceans of the so-called genera Hricthus and Alima, which have 
been latterly shown by Claus to be larval stages of various 
Squillidee. 
Toward midday, in hot, calm weather, the tow-net, when used 
on the surface, is usually unsuccessful. It seems that the great- 
er number of pelagic forms retire during the heat of the day to 
the depth of a few fathoms, and come up in the cool of the 
evening and in the morning, and in some eases in the night. 
The larger phosphorescent animals are frequently abundant 
during the night round the ship and in its wake, while none 
are taken in the net during the day. Mr. Moseley has been 
specially engaged in working up the developmental stages of 
Pyrosoma, and the intimate structure of the tissues and organs 
of some of the surface groups, whose extreme transparency ren- 
ders them particularly suitable for such researches. 
February 21st.—Up to 2.15 p.m. going on under all plain sail, 
at the rate of six knots an hour before the N.E. trades; force 3 
to 4. Sounded in the afternoon in 2740 fathoms, the “ Hydra” 
machine bringing up a small quantity of yellowish globigerina 
ooze. The thermometers registered a bottom temperature of 
2° C., and the bottom water taken with the slip water-bottle 
gave a specific gravity of 1:02623 at 20° C., the surface water 
I.—12 
