Most of the fish specimens, as in former years, were cole P tected by polsoning with derris root in shallow waters on or “pear the reefs. Some opecimens were caught in the deeper waters of the Lagoon with. hook and line. Two flying fish were obtained outside the atoll when they landed aboard ship f duringthenight. The species selected for analysts are those commonly found f on the atolls andused for food, They’ inelude damsel fish, age yo Pngsperm Ra ge RR reRRee RE Tee Ne Sy 5 grouper’ parrot fish, squirrel fish, surgeon fish, goatfish, “wrasse, snappers, mullet. and tuna. ie ¢ £ The sdientific namea of the epecies are given in the” appendix, The tissues used for analyaie:Of :radioactivity‘were akin, | macte,bone, liver and other viscera, The latter included partof the stoanch contents ap well an.the alimentary canal, |in moat cases. ae Tn an attempt to compare ‘sinilar species feom the same locality analysis was limited te the samples from Kabelle Bo Island, Collections of fish were made in waters. adjacent ‘ta * this island on March 26, 1954, July 16, 1954, end January 29, 1955,.. The collecting area lies near the north end of the | istand and consists of a coral-filled channel, open’“tathe sea |athightidestheradioactivityofthetissues: fronthe:fish || collected at Kabell@ia ‘sumiariéédin Figure 3. the data are | listed inTable Tz, id Z mepetRofenaOneSee . a