TEMPERATURES. 237 
tions where the current was of less velocity, that we found the 
greensand deposits, and made an occasional successful haul of 
the trawl or dredge. But the condition of the bottom speci- 
n 9 
ом - A 
e ES 
9% m a 4 e 
4 a >й 0 ч R >. 9 Б v е ке a E 
to Фо е - 
PERNA Ў * E: а e = $ 8 s 
2 0 6. gl 34: РҮ" c 
ую" l | 
| 
! 
| 
| 
| 
ЖБИ i 
Bot pdt е м. „‚„—— 
whoo 3 TIN 
|ж Ц 
втоо |... МА с — 
ha NG 3 
8000. bd P 
mens and the absence of silt from our hauls gave us every in- 
dication that the floor of the trough of the Gulf Stream was 
bare and hard, and practically swept зз 
clear of all débris, and consequently f i 
could afford little foothold for the 
development of animal life. 
The soundings made by the 
* Blake" to the northward of San 
Domingo (Fig. 164) and to the east- 
ward of the Bahamas, as far as the 
Bermudas (Fig. 165), and from the 
Bermudas again along the triangle 
bounded by the Bermudas, Cape Hat- 
teras (Fig. 166), and the southern =°% : T 
coast of Massachusetts (Fig. 167), LE T 
have developed the following facts: namely, that there must 
be a ridge which prevents water colder than 36^ from finding 
2000 fms 
мо m.E.of 
238 
í 1095 
Fathoms 
поо oz 
