sarees eh ta 5 em
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oe
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ele
-15-
2
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*
to the soap and could be scraped off with a knife.
The process was
usually repeated more than once at each station.
At Station 10 the
anchor brought up several pounds of the bottom.
Samples were taken
ae
from both the hinge of the anchor, which was considered to have been
wy
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“ss
ee
at about surface level on the bottom, and from the flukes which were
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=
n
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estimated by both ship-
8
E
and laboratory-personnel to have dug about
> ~4
iS
w
.!
£
x
‘
two feet into the sand of the bottom.
ei
3a
2
At the first four stations sea water for plankton was pumped from
1. &
»
AAS. Lae
astern of the ''Aloto’’ by means of a high-speed, gasoline powered, fire-
rom,e..
fighting pump with a capacity of about 40 gallons per minute, while at
the other six stations a more reliable, submersible, electric pump op-
tfo
ts{5
erating alongside the ship gave 180 gallons per minute.
Ns
we
~ &&
%
ye
m
tinued for 30 minutes with the mouth of the net above water, so that all
Za
3
pumped water went through the net.
Tm
.
Pumping con-
iy
2
Pumping, as here done, although more quantitative, was less
<
at
sirable than towing for two reasons.
¥¥
aie
de-
Smaller samples of plankton were
&
obtained, and picking up debris from the ship seemed unavoidable.
‘eS
‘
3
ey
The plankton was preserved in alcohol except for the tows in August
y
we
.
'
~
*
near Kabelle Island.
wy
L
:rd
“o
+
Here the bucket was removed from the net and the
5,
2| 3
end of the net tied closed.
“*
.
drained, untied, and the plankton scraped directly into small plastic
bug
ww
*
2
al
EN
\% =
bags in which it was later dried at 80° C without preservative.
* |
a
lankton-
ond
Ns.
eee awae
After towing, the net was washed down,
:,
.
Because