~21- Levels and Decline of Gross Belle Island Beta Radioactivity at Plants The amount of Scaevola plant No. given in Table 3. radioactivity in the samples of 1319 collected during the The amounts for the study is other species are given in Table 4. The highest amounts of radioactivity, were found in the leaves pre-Nectar, (20 uc/kg) of a young coconut plant collected in the western part of the island in Area C and in the roots (18 uc/kg) in the same area. and tops (13 uc/kg) of a grass plant The lowest amount was found in the stem (0.35 uc/kg) of a Messerschmidia plant at the eastern end of the island. In Scaevola, post Nectar the levels of radioactivity were higher factors of 500 (leaves) than the pre-Nectar and 30 (stems) level (29,000 uc/kg) levels (Table 3). basal leaves of a Scaevola plant in area C highest three by The contained of all of the plant days the samples collected at Eniwetok Atoll during this study. Scaevola plant No. some of radioactivity 1319 were tissues contained more compared of eight tissues of to determine whether radioactivity than others. In ayy The amounts