,
oes
sy
tt dy “Et
ain
RieNI aaaaieri at oreia eth i th ee
ARRAScseho
ee
.
.
:
=
aa
rirail
Organism
Date of collection
Site of collection
Pish gut
May, June, 1954
Belle Is., Eniwetok
Whole mullet
May 19, 1954
Edna Is., Eniwetok
Plant leaves
Sept. 22, 1956
Bikini Is.
Plankton
June 1956
West of Eniwetok
Plankton
Sept. 1956
(Scaevola)
PO METGi" Faclig 2 BoWh
e. Tie wR ec wear de
POE
I Meet magia ee
ieee
scaeeea
sesseel asHispa
;
;
;
1
~37-
Coconut crab liver
tt
uw
Coconut crab
"
"
tt
it
1%
Nan Is., Bikini
"
Tt
i"
carapace
Bonito liver
Sept. 22, 1956
Bikini Is.
Bonito muscle
"
"
"
"
"
Fish liver
homogenate
"
"
"
"
"
Gamma spectra from the first five samples are shown in
Fig. 12. Only in the fish liver sample is the zn7
peak
low, in which case it is masked by the 1.17 MEV peak of Co
The
JY
peak for n°? is,
however,
60
strong in the curves for the
other fish tissues (gut, bone, skin, and muscle) indicating a
high level of n> in comparison with the other
mn54 4s also present in the fish bone,
skin,
JY
emitters.
and muscle samples.
‘
ee Eoie apie bt,
abIE
IE
antesites,
The latter sample also exhibits a weak peak for Csl37, an isotope
often found in the muscles of many species of animals collected
at the Pacific Proving Ground.
High levels of zn? are also present in fish collected re-
cently (Sept. 1956, Fig. 13) as well as in the 1954 fish samples
described above.
a