-13- B. Proposed studies of radioetrontium leveis in crustaceang Racicetrontium nas deen found to constitute a large pro- portion (up so SOM} of tne redioaetivity in tne ezosxe.laton of land sreabe collected at tne Pacific Proving @round. proposed, tasrefore, It is © (1) scompare radicetrontius ijeveis ia land creve and marine crustaceans sollected in the fSeGd@, (8) male field cdeervations of tne Reee@e of land crabe wi@h the ides of determining tneir princiga? egource or sowees af radic- strontium, and (3) make determinations of rates of abOuIPpti on of atronsium oy land crabe at the Bpliied Planeries Leseretory Coliwetion :° -.zerial for (3) and the field seempuati one will pe sade eS Zuiwp@ek Atoll. Gabe for detarainutias of oats of ssece3tion should Be sollected 23 Kea jalein or at ome stores amecntaminated atoli for shipment to Seattle. 72 would de 2092 muitadle te condust theese stiudises acm, - -ePies 13 sompleted or iater. yanfusing effeets of resea. - fia vourd aroaid “a Mm iop wilta sno vter-iired sacioisotetes during tne .38t serias aaner xc “as 3 long rml? iilfe 1% would cometitute a aigher propearticon 3f madiomestiyity at tae iater date, tia aiaplifyizg we mmm time fet uired would 2e alt o. ww sdecrots *O dass isp total c« study. -eng 36 “he 77g. or eadiolodine of SapBregopo: a meing the i19£4 Castile series a red alga, Aas ragopsis. i323 goncentrated I~ avout 18.COO times the amount oresent in the % BTS SS AGNg salar ~. cor algae or land plants did not sace =