346 THE ATLANTIC. CHAP. V.] 
XLIV., just within the Gulf-stream, it was 1°-7 C., and it is sin- 
gular that so near one of the sources of cold, and directly in the 
path of one of the most marked polar return currents, the tem- 
perature of the bottom water should be higher than that of the 
deep water of the Middle and South Atlantic. 
We sounded on the morning of the 2d of May, at a distance 
of 209 miles from Sandy Hook, in 1700 fathoms, with a bottom 
of bluish-gray mud, containing a considerable proportion of Glo- 
bigerine, but not what could be called a true globigerina ooze. 
The bottom temperature was 1°-7 C. In the course of the day, 
temperature soundings were taken down to 1500 fathoms at in- 
tervals of 50 and 100 fathoms (Appendix A), and at intervals 
of 25 to 200. 
Surtacesnecacscce ssa cll OW: 125 fathoms... .s.00 <0 oe 
Oh fothOms:...s2sme ee LOD 150 MO) Scieed alee ems eleee 6 6 
50 Red L wicnevedeetecetelsyen 11 4 175 s siatlets alts ite 
45 i VADs Seleshs Foe LOS 200 sf oa % she sions Rages ORD 
100 Os saith a piecerhae- ames me aad 
Although on the surface the influence of the Gulf-stream was 
still felt to a certain extent, the contrast between the observa- 
tions of this day and those of the day before was most marked ; 
we had crossed the “cold wall,” and the temperatures registered 
were almost purely those of the Labrador return current. The 
dredge was put over shortly after midday, and veered to 2500 
fathoms. It came up in the evening with a considerable quan- 
tity of the bluish clay, and the dredge-bag contained many ani- 
mals of different invertebrate groups, while a large assemblage 
of larger and more striking forms were on the tangles. The col- 
lection as a whole had a decidedly arctic character, and recalled 
some of our dredgings on the coasts of Northern Europe, al- 
though it seemed that few of the forms were absolutely identi- 
cal. There were many large foraminifera; most of these were 
of the arenaceous type, but there were also several calcareous 
forms, including large examples of Cristellaria, Pulvinulina, 
