57
over 90 per cent of the gamma radiation, and in no case less
than 74 per cent.
mn>4 was detected almost exclusively in
bone and gill,
and since the bony gill arch was included in
these samples,
it
is
likely that it was with this portion
that the mn>4 in gill tissue was associated.
In the Mullidae,
the measured level of zn®> was higher for the Kabelle than for
the Rongelap sample.
5.3
September 1959 Rongelap Survey
5.31
shows
the
Goatfish from Rongelap and Kabelle Islands.
levels of total
(stable)
zinc,
zine-65
,
Table 5
and the
specific activity of zinc-65 in eye and liver tissues of 20
goatfish caught in the vicinity of Rongelap Island in September,
1959.
Table 6 shows the levels determined for a sample of 9
goatfish caught at Kabelle Island in the same month.
are presented
for G.
I.
tract,
brae as well as eye and liver,
gill
filament,
Values
muscle and verte-
since the generally higher levels
in the Kabelle fish rendered them suitable for comparisons
between tissues.
5.32
shows
the
Convict surgeon fish from Rongelap Island.
levels
of total
zine and
sample of 8 convict surgeon
zine-65
fish taken
Table 7
in the tissues of a
from shallow water near
o§