aie ett ce resin column techniques is provided by gamma spectrometric obser- vations on whole samples. of the transition elements reported in this paper, 69 and ote Bela ‘i " cube i ai silt alia cha aaa oe -33- an? were first detected by their samples. however, Fe--, Fe?, Co?!" fY peaks in spectra of whole 58 Co”~~, and Mn? were not identified, until the samples containing them were subjected to chemical and ion exchange separation, although the Co?!" C028, and Min? were present in whole samples. and 1.33 MEV 7 peaks of Co 60 7 peaks of The 1.17 were first observed by the pres- ent workers in the following samples examined in late 1956 and early 1957: Organism Date of collection Site of collection Whole fish Nov. 8, 1952 Janet Is., Eniwetok Snail liver June 19, 1954 Belle Is., Eniwetok Bonito muscle Nov. 26, 1954 Bruce Is., Eniwetok Clam kidney June 1954 Belle Is., Eniwetok Clam kidney July 1955 Belle Is., Eniwetok Clam kidney Sept. 1956 Belle Is., Eniwetok Crab carapace July 27, 1956 Belle Is., Entwetok Herring July 27, 1956. Belle Is., Eniwetok Plankton Sept. 1956 West of Eniwetok Fish liver Sept. 22, 1956 Belle Is., Eniwetok Gamma spectra from the first two samples (snail liver and bonito muscle) above are shown in Fig. 10. The 60°° 7 peaks of the snail liver are not as well cefined as those of the bo- nito muscle or the Co 60 spikes. This is due to the penetration or the aluminum ease of the NaI erystal by high energy PB radi-