-11-
curves which tended to level out,
tained,
and the flattest slopes that they at-
appear in Table 2.
The slow decays thus include almost all of the decays available
for bird and rat as well as curves for muscle and kidney
animals.
of
most
The slow rate for rats could be due to residual activity from
earlier detonations in the vicinity of Biijiri Island.
Muscle with
its
high K40 content and kidney with (in the tridacnid clam) an affinity
for strontium would be expected to exhibit slow radioactive decay.
Table 2.
Summary of the nineteen curves from Table 1 and Figures 1-6,
showing the most decided tendency toward leveling and the
minimum steepness attained.
Curve Organ-
no.
ism
Tissue
Latest; Curve
Organ-
Tissue
Latest
35
37
40
41
45
46
47
48
49
50
fish
fish
crab
crab
fish
fish
fish
fish
rat
bird
skin
skin
muscle
muscle
muscle
muscle
muscle
muscle
muscle
muscle
-0.8
-0.8
-0.2
-1.0
-0.5
-0.9
-0.3
-0.6
-0.06|
-0.25
fish
rat
bird
bird
rat
bird
clam
clam
rat
bone
bone
bone
lung
liver
liver
kidney
kidney
kidney
-0.85
-0.03
-0.63
-0.5
-0.3
-0.6
-0.5
-0.6
-0.4
slope
no.
56
59
60
66
74
75
85
86
87
ism
slope