oe & +9 Suetura, Y. and Kanazawa, T. RADIOACTIVE FALLOUT COLLECTED IN TOKYO ON ROVEMBER 26, 1955. jpicorology Geonusss2s.Zokve 7» day. Rain water and fallout samples taken in Tokyo before and after the 22nd indicated the test had produced a secondary fallout from sone previous explcsion. Rain water of the 2lst and fallout of the 29th had radioactive content of 13 days halflife; fallout of the 26th, rain of the 27th 3 days half-life. Sample of the 26th consisted of 15 ng. of sooty material giving nearly 2000 counts/min. at that tine. 71. Tajima, Eizo and Doke, Tadayoshi RADIOACTIVE IN THE OPEN AIR. Kagaku(Science) 26, 124-9 (1956). A review of radioactive dust. 72. Tanidazawa, M. and Ishihara, T. RADIOACTIVE ELEMENTS FOUND IN PLANTS CONTAMINATED BY RADIOACTIVE RAIN. Radioisotopes(Jaran) 3, no. 1, 21-2 (195%). ashes obtained from contaminated trifolium repens, astragalus sinicus, and rumex japonicus were studied. The precipitate obtained by treating the acidic solution of the ash with HoS followed by Fe ++ in the presence of NH, and NH,Cl contained Y, Sr, and the rare eurth elements. 73 Thomas, Harold Allen THE FU3LIC HeALTH IMFLICATIONS OF RADIOACTIVE FALL OUT IX WATER SUPPLIES. Journs. Public Nations lisaiii s n d ine 46, 1266-7 (1956). Significant increases in radioactivity in Massachusetts streams occurred only when precipitation took place through r dioactive air nasses. During the period fron Novenber 1951 to June 1953, there were 2k detonations, only five were followed by fallout exter.sive erouglr to raise the radioactivity above natural levels. Tne caximum observed in any sample was about 3 x 10°’ xicrocuries per ml. of total beta activity at tnmree days after fission. “1d- MO ODTE A large nuclear weapon test by Russia was reported Novenber 23, 1955 as having occurred the previous tet rapqeees ED FWP oe we 126-35 (1956).