10. The mean values for 90, 13746, 60.,, 65 on and $4 in diet items at Bikini Atoll in 1967 were given in the Radiological Report on Bikini Atoll by Gustafson in 1968, and are listed in Table 1 with the average values determined from the 1968 samples. Three hundred fourteen-day 34in and 245-day 657 have been omitted from Table 1 because no detectable amounts of these radionuclides were found in the 1969 samples, and ae has been added, by using values for 1967 samples from an addendum to the 1968 report. The 1967 values for fish include reef fish and troll-caught ‘fish, whereas the 1969 data in Table 1 are for reef fish only. The average values for 60 Co in the muscle of troll-caught fish were, Yellowfin tuna 0.15 pCi/g wet Vlua 1.7" Dogtooth tuna 0.04 " " of Eneta Department wistorian’s office " ARCHIVES Thus, the 1969 values for fish in Table 1 are greater than if the values for troll-caught fish were included in the averages. In Table 1 the data for giant clams are for 1969 samples taken from the vicinity of Bikini I. Clams were also collected around Nam I. but they were of a small species which is rarely eaten; also, the level of 6006 in the Nam I. clams was lower than in the Bikini I. clams, presumably because the latter were older clams which had accumulated 6006 for several years. No