CHAP. V.] THE GULF-STREAM. 339 
April 25th.—We sounded in 2600 fathoms, with a bottom 
temperature of 1°°8 C. The mud from the sounding was red- 
dish and very smooth, containing scarcely any foraminifera and 
only a very small proportion of carbonate of lime. Serial tem- 
peratures were taken to 1500 fathoms at intervals of 50 fathoms 
(Appendix A), and for the first 200 at intervals of 20 fathoms: 
DSUtaCety = meee ace Hilerrl Oy LAM GtathOMis aie cere 18°-8 C. 
20 tathoms..jeeeciees 0) 140 A Pug hetal asus te ores 18 °5 
40 COP Ai aang oes LOO 160 CE Pon atone 18 ‘2 
60 eae fda tenaters Mpohon teks 19 4 180 ood ra cia ine aes 17 °3 
8 Oat ome ramen Ot S() PAO) © OE WE rs aie nets EP Or 
100 ERY sovaaianle Geeot LOS 
During the day the force of the wind gradually increased, and 
toward night-fall it was blowing half a gale from the south-west, 
with a steadily falling barometer and vivid sheet-lightning on 
the northern horizon. The gale continued during the night 
and for the greater part of the following day, the wind veering 
round to the north-west, and the sea running so high as to ren- 
der sounding or dredging impossible ; toward evening, however, 
the weather moderated, and the barometer rose. Owing, prob- 
ably, to the change of the direction of the wind, the temperature 
of the air was 7° C., below that of the day before. 
On the 27th, at a distance of 450 miles from Sandy Hook, 
the depth was 2850 fathoms, with a bottom of reddish-gray 
ooze containing some Globigerine, and a bottom temperature 
of 1°°8 C. As we were now approaching the southern border 
of the Gulf-stream, two sets of serial temperatures were taken 
at intervals of 25 fathoms from the surface: 
First Series. Second Series. 
SHINES sob Son cooen coins LO. lta CoN eerenom mane erento A= 
25)-fathoms: scree s+ <1: 17 4 WSs HEANOR SE Sooo ooue wlkesIs Gr 
50 SOR, Na RaeUy man revere Wie <9 50 EM Bi aie aeaconecaiene USCS 
45 Piabsvacketeneislexssietris —_ 75 prt AMUN eR a eau yey a 18. °6 
100 Sa Ts Be east ette ote a 17 6 100 a Reisoleseoe. LUGS 
125 SS) ss eae yemtnchereuete —— 125 % Seed a rere Sete TSO, 
LS On ees PS Er Pen Arclevstencre 17 °6 XO BSE NE GR etcasucccin, ll Ret ace} 
