BSawt et
-
e
%
oan AUC emg 4
3
@
Saitmazece
In Pebruary 1956, Miss Dorothy South analyzed radio-
chemically some of the invertebrates collected at Belle in
Pebruary and March, 1955, using procedures designed for the
determination of fission products.
the study more fully elsewhere.
Miss South ts reporting
Cel44-prl44 accounted for
52-61% of the radioactivity in samples of spider snail
muscle and mantle, and sea cucumber gonad; for only 10% itn
clam kidney; and for less than 1% in land hermit crab muscle
and carapace. Sr9° constituted approximately 50% of the
activity in hermit greb carapace, 5% in its muscle, and 0.1%
in clam kidney.
Clam kidney.
Ca5 constituted 2-4% of the activity in
Because of the late date of analysis, Sr89 was
not found in any of the samples mentioned here.
The pro-
portion of radioactivity due to Csl37 in March 1956 for land
hermit crabs collected November 1, 1955 at Belle was 88@ in
muscle and 81% in liver.
At Belle the slow rates of decay and decline for spider
snail muscle and mantle, and for sea cucumber gonad, relative to other tissues of the same animals, are presumably
due to the large proportion of the radioactivity contributed
by th-*e particular long-lived products, but they do
explain the slow rate of clam kidney.
not