-17- RESULTS AND DISCUSSION ris from the itting of the ymmended Piankton Tables 3 and 4 give the plankton data from 1954 to 1958, including Objective. was compiled. In- he plankton the values from which Table 12 of UWFL~43 (1955) adioactivity dividual plate values [sea salt and for 1954-1955, to permit comparison of coarse- and fine-meshed ‘at the time net samples. ‘vative, were | plankton and planktonic ash in order to assess the relative suitability of cluding salt these two bases of reporting results. eared ; appear in order to show the degree of variability, Radioactivity is expressed per unit weight of both wet Levels of radioactivity were equally high in coarse- and in fine- low meshed nets. The equality prevailed on either a wet weight or ash weight basis amongthe ten pairs of simultaneous tows with coarse- and 2 date of fine~meshed nets listed in Table 3. ng as was from a coarse-meshed net five times and from a fine-meshed net five stions for times on the ash weight basis, and the same was true on the wet weight vels on the basis. is high as certain mesh size on both the ash and the wet basis. collections vation indicates a randomness, McAteermemes SH). thane-flow SW rege In only half of the cases was the specific activity higher for a The above obser- or in other words, a lack of correlation between mesh size and specific activity. In the Laboratory's earlier reports (AECD-3446:103; WT-616:20; UWFL-42:31; UWFL-43:47; UWFL-46:9: UWFL-47:11), beta radioactivity rm ing ully The higher value of the pair was et