of selected samples. Plankton Samples. Qualitative gamma spectrometric exami- nation of the total plankton collected from each of three nets of different mesh, counting of individual samples at the Co>’, cel44.p,144 photopeaks, determination of composition of plank- ton by sorting of major groups. Invertebrates. beta counting, samples, Dissection and preparation of samples, gamma spectrometric examination of selected radiochemical analyses of selected samples. Fish. Analysis for zn©3 content of various organs and tis- sues of goatfish from a single school in relation ses, gross- determination of stable zinc content of to size clas- samples of goat- fish and organisms on which they were feeding. Birds and Rats. Samples prepared for radiochemical analysis, but actual analyses remain Foe SAMPLES 2 DAILY CF Rirviens to be initiated. COMPLETER FeO Mn Mla E The period from July 1, RADIPCHEMIC RE ABU eT 1960 to June 30, NAALES, ANMALYESS 1961 will be devoted to a continuation and completion of the above studies, with the addition of (1) chemical and radiochemical analysis of sumples from the pot culture culture Botany, experiment completed at Eniwetok; experiment in the new greenhouse of the using Rongelap soil; 5002284 (2) pot Department of emphasis is being placed on C3137,