roaming freely on the Island derived his activity froa contimoua ingestion \ of contaninated vater and foodstuffs vaich hod incorgorated fleston pros Oo . The rooster’ eae The ratio of beta to carma activity was approximately one ey indicated relatively hich beta and gama activity (0.7 pe/vpole antral) . ducts. In comparison, chickens collected at one month postedetonation end renoved from the contatinated areca continued to show interaally deposited activity in detectable amounts for a period of only chout 6 renths. In the rooster over 9 per cent of the totel ectivity vag found in the skeleton, 3.5 per cent in the muscle and 2.3 per cent in tha viscera. . | Only very small anounts of activity were found on tha akin ood feathers end even less in the lungs. Soe eS he . Cousiderable variation exists in the concentration of activity per F weight of individual tissues es a function of the geographic Location of . the anirals, In the Rengelep Atoll, for exemple, fish and trvortcbratee caught in the northern part of the lagoon containcd on en avenge 3 toae : tines the anount of interaally deposited fission products as that found,‘tn fish from the southern lenoon. This is consistent with the fost that the - northern lagoon was exposed to higher concentrations of fell-out csteriale Averege external parma readings of the northera ani southern Roagslsp Islands were 5.8 ana 0.7 urfhr respectively. ‘he fish caught off Meiwetek Island (0.7 crfbr extersal g2ms;) and Utirik Island (0.14 rx/he external gura) contained the sas2 averace concentration of internal ‘activity a the fish of the southern Roncelap lacoon. Liktep fish (.0% eafae external germa on isleni) contained lover but still detectable amounts of fnteroal redioactive contmaination. a. 7 The totel activity in the enaller fish ¢ <290 a) ND weg in conofiiresootianBeas per unit body veicht than thst of the large 2h 3 weTETSEIN ae.