- 2h.
r
10,
7
SPIDER
SNAIL
100
1O00F
<
S
wa
4
be
to
4
1OOr
=
2
q
~
oO
—_
tr
4
Te)
OIF
25
L
100
DAYS
600
AFTER
Figures 7 (left) and 8 (right).
25
MARCH 1, 1954
4
100
Decline in radioactivity
of tissues of giant clam and spider snails from northern
islands of Rongeélap Atoll.
600