. Silgg, ts Aridi Xuan 50 Summary 9. (continued) Some radioactive materials are being eluted from Bikini Atoll but their addition to the total activity in the area between Bikini and Fniwetok is probably insignificant. 10. Reef fish from Guem and skipjack taken approximately 350 miles to the southeast had about the same levels of activity; 136 d/m/eg wet (A activity) in skipjack livers wes the highest level found in thet crea. 11. A single flying fish taken spproximately 60 miles north- west of Eniwetok had a totsel £ -activity of 7,500 d/m/g wet in the liver and 360 d/m/g wet in the muscle. 12. Pr Plankton was found to contain Sr 144 » Ru 103 » Ru 106 Rhee, ono? - 3 69,90 parol st#O cettt $927? 98,60 on®? Feo? > » and trivalent rare eerths. 13. There is a difference in isctopic content of plankton collected 90 miles north of Eniwetok and plankton collected L170 miles west of Eniwetok. 14. The liver of a flying fish collected about 90 miles north 4 of Eniwetok contained Ce Lhe ppt + ar -Nb?”, co? 00°, and é an”>, 15. of gf A scintillation probe for continuous monitoring of levels activity in the sea water was found to have insufficient sensitivity to discriminate between stations in areas of low activity.