! ‘ 1.39; hettom, 9.057, 9.063, 0.076), but the water from | | the Tewa crater, the south side of which is open to the lagoon, exhibited low ratios (surface 9.013, bottom N.016) which were characteristic of the ratios for th e central lagoon (Fig. 2). In addition to the water samples, analyses have heen made on 8 plankten samples from stations at which water sample were also collected. are as Sample , The results of the plankton analyse s | follows: d Pn 239,249 pag ash d Pu259,240/m/gwet no’, d Pu238 m/eas R-2 B4 + 2 7.9 + 1 1.0 + 41 , 6% B-21 “AT + 2 2.6 + .1 1.1 + .2 on R-22 “TBR + 5 5.7 + .2 114.1 | o@ R-25 “H15 +7 5.3 + .3 4 2 [att R-27 28 + 8 1.5 + 14 7 + 45 B-31 25 + 1 - 1.0 + ,14 _ 4 + .06 - if ab |. C-3 D-6 “330 + 7 6 + 43 9.5 + .5 ~_ 5.1 + .5 24 + 01 S| Roel ~ The ratios” Pu2*8 ;py259, 240 followed the ratios found in the sea water with the C-3 water sample from the Bravo Crater having a surface water ratio of .(4 and a bottom wa of .06 and the plankton a ratio of (£04 ef a / -Fe . ratio € open sea water . outside of Rikini Lagoon had a ratio of approximately .f4 and the plankton at Station D-6 had a ratio of .95. 5005531 Three of Ne