a , rlyWein so OSE : and sharp drops on other dates. Another striking charactcristic of the catepory ic, that the average degree of radiation is very high. If a hydrogen bomb test i6 carried out, the radioactive ashes ccused by the test will be blown up high above the sky. According to Mr. Ariyoshi of the Central Meteorological Observatory, chances are high that the area east of Kwajalein Island would be showered with nore ashes of this sort than in the area west of the island. The surveys conducted by him on March 1, April 6, April 26, and May 5 show that the area east of the Bikini Atoll was showered with more radioactive ashes then the area west of the atoll. This tallies with the ~ results of our surveys. Judging, however, from the weather conditions of March 26, we cen surmise that the ashes would have fallen over the distant area east of the Bikini Atoll. We cen give no adequete explanation to this. Since the hydrogen bomb tests were suspended in mid-ksy, the degrees of radiation of the boets visiting the area have gradually decreased, S. Heletionshirs between Fishing Arees end Radiation: Trere are found a close relationship between the radistion of fishing boats and the fishing areas. Only one irradiated fishing boat wes discovered in the area north of the 15th degree of north letitude. €. Feletionships tetween "West Area Radiation" and Fishing Dates fo nerrox strip of weters south cf the 15th degree of north latitude, extending from east to west, is contaminated with radiaticn. Any boat which pesses there will be found recioactive. The southern end of the irreciated strip of vaters will not extenc beyond the equator. of E ergy 7. Cese fcr "West Aree xediction": he anrimon = ee ores cine? west erea reciation” may have teen caused Ly rs rr cay eS the 'Ysdreticn cf sea weter there. In other words the nortn eunetor current flows in the see area ostween 15 anc 5 deprecs of nortn letitude. The area where the nydrojen bomb tests were conducted is in tne current iiradiatec zone moves from eest to west. 6. wherefore vhe Conclusion: Tne eir over the egst of the spot where the tests were conducted also disceoverec thet ea fishing boat in the areée west of the spot teninaved by racietion becasse of the irrecieted sez weter there. It is wes con- Sl ae) is discovered te heve been irredieted over the permissible decree.