CHAP. III. ] TENERIFFE TO SOMBRERO. | 175 
A series of temperature soundings were taken after the 
dredge came up, with the following result : 
Surlacenecemeeaacce mia 20-0 Ce S00 Mathomsser a eieeee 440) Oe. 
lOORathOMmsesea eee sere Le 5O 1000 ola Nes ehnaenis Serarahaeya © 2040) 
200 we Rac awa aha tal ere telah ifs) 2g) 1100 Ee VERS te Ok See 3 75 
300 ge Soe ena ay Ld eee 1200 BON aieiesucvs pram evox he 3 °0 
400 Oy Pe aed Pe OT es 1300 ce maicreyers kava woo 
500 nae Sea oy 1400 _ Sto DD MOE eth 
600 neh) aarasetelaye. a 3 Be Ok Co 1500 s donakonsio levees arate 2:0 
700 ae BA cae oO 2740 - Rett e stele) eB: 
800 SON tiicisst atten eet 5 2 
On Sunday, the 23d, we continued our course, going before 
the N. E. trades at an average rate of seven knots an hour; the 
Fig. 41.—Leda (sp.). (No. 5.) 
sky and the sea gloriously bright and blue as ever. Several fly- 
ing-fish were observed, and many large examples of Physalia, 
although there was a good deal of surface motion. At 4 p.m. 
we shortened sail and sounded in 2950 fathoms with the “ Hy- 
dra” machine and 3 cwt. The chamber of the “ Hydra” con- 
tained a small quantity of reddish ooze with a few foraminifera. 
The corrected temperature at 2950 fathoms was 2° C. 
The following day we sounded in 2750 fathoms, and found 
the bottom still more unpromising. It was of a decided brown 
color, and contained very few definite organisms, although it 
gave to a rough analysis a considerable quantity of carbonate 
of lime. The bottom temperature was 2° C., the temperature 
of the surface being 20° C. 
