The alpha contamination of the Bikini been re-evaluated. target area has Ether extractions from a 9=- normal nitric acid solution of Halimeda collected at Bikini during August of 1949 and counted during August of 1951 ranged from 58.2 to 820 d/m/g with the average count of 378 d/m/g for the sixteen samples counted. At Eniwetok both terrestrial and aquatic were contaminated by the detonation of seven (7) environments atomic bombs. The problems are complex but still very usable in studying the over-all effects of residual radiation upon living forms. The surveys of the fauna and flora of Eniwetok during the summers of 1948 and 1949 provided data on the amount of biotic contami- nation and on some of the more obvious effects such as the mortalities observed in birds, fishes, and invertebrate animals in the fallout area, mutations in plants on the shot islands, apparent calcium deficiencies occurring in plants growing on mountains of calcium, plant tumors, etc. only the more conspicuous ones, These observations are for the complete story can be written only after continuous observation by a number of specialists over a period of years. Eniwetok at the present time has material to warrant continued study. sufficient radioactive Samples of the soil from