la, 105-12 (1956). Bomb energy, detonation altitude, ang atiospueric conditions have significant influerces on the mechanisa, rate, and pattern of fallout. These variables are discussed. Also gensidered is the possi- bility of an intolerable Kr°/ concentration in the atmosphere fron nuclear power plants. EnglundJournalofHedicine 253, 88-90 (19 Jt nee RS Moloney, William C. LEUKEMIA IN SURVIVORS OF ATOMIC BOLBING. Muller, Hermann J. AFTER EFFECTS OF NUCLEAR RADIATION. Nagasawa, Kukuma; Kawashiro, Iwao; Kawamura, Shoichi; Takenaka, Yusuki; and Nishizaki, Sasao. RADIOCHENiCAL STUDIES ON RADIOCONTAMINATED RICE CROPPED IN NIIGATA PREFECTURE IN 1954. Bulletinof e Na a e a no. 73, 187-90 (19 Radioactivity of various parts of rice seeds cropped in 1954 was detd. and compared with that of 1953. Radioactivity due to K4+O was established as total count of the asl. and was subtracted for correction. None of rice seeds in 1953 showed excess radioactivi- ty. With the seeds in 195% the following were obtained: 3-6 cop.m./2 g; polished rice 0; results unhulled rice 3-6 c.p. neJB3 chaff unpolished ite 0-0.3 c.p.m/8 g.3 rice bran 0. This radioactivity is thought to come from the rain, adherent to the chaff, but not from soil contamination. 2 Pe GM, METEOROLOGICAL ASPECTS OF ATOMIC RADIATION. Science A tat p- rare Brea, go " WS.