■ fl
Is
Although on the surface the in fluence
of the Gulf Stream was
still felt to a certain extent, the
contrast between the observations
of this day and those of the day
hefore was most m ark ed ; we had
crossed the ‘ cold wall,’ and the
temperatures registered were almost
purely those of the Labrador
return current. The dredge
was p u t over shortly after midday,
and veered to 2,500 fathoms.
It came up in the evening with
a considerable quantity of the
blueish clay, and the dredge-bag
contained many animals of different
invertebrate groups, while
a large assemblage of larger and
more striking forms were on the
tangles. The collection as a
Avhole had a decidedly Arctic
character, and recalled some of
our dredgings on the coasts of
Northern Europe, although it
seemed th a t few of the forms
Avere ahsolutely identical. There
Avere many large foraminifera;
most of these were of the arenaceous
type, but there were also
several calcareous forms, including
large examples of Crys-
tellaria, Pulvimdina, and the
delicate OrbiloUtes tenuissimus.
Fifi. 94.—Diagram showing the iv-
l.ation hetween depth and temperature
a t S ta tio n 44.