cO/ Table 2. Third count uc/kg Preservaash tion of plankton alcohol . 34 .25 ” to tt " . 33 . 103 " 11-19 " 2.7 2.7 11-21 2.7 " " " " 3.3 3.7 tt 2 . 9 3.5 10-22 10-22 1 oO " 11-19 " " tt n alcohol " " " " " " " .019 .59 dried"fresh . 1 . 3 4.0 _ 021 -52 2.7 ' 9-16 11-18 " 1 . 6 .62 tt 43° . 66 1.3 ” 11-18 2.6 t =:11-18 . 74 " 10-22 lle 21 1,25 " O34 11-21 59 41 .019 " 11-20 .78 .O19 11-21 -53 11-20 5.7 .021 " . 88 . 63 1 . l "n " " 5033 " " " .14 " " .026 O34 .37 .057 " .026 11-20. .O77 11-21 460C~«S .29 11-20 1.1 11-21 " 11-19 ALS 6.8 5029 11-19 10-22 . uc/kg Month & ash day 1958 Second count 11-21 " 11-20 uc/kg Month & ash day 1958 .24 . 32 11-18 . 37 " .O77 " 9-16 Plate Month & No. '58 day series 1958 — First count Levels of beta radioactivity of plankton collected from Rongelap Lagoon in 1958. Collection rtumber - Locality Collection late 5002 5001 5003 2 3 1 " w 3.8 n fn 9-16 33 11-19 TT . 6 3 .O 5026 5020 2 5030 3.5 " 3 .2 Tow 1 Tows 2-5 5025 3 5032 5031 " " " 8 5006 502] 3. 4 5022 h .2 5023 5005 5004 2 1 1 " Tow " Tow " " ” i) tt March 1 t March 9 ‘Tow 3 Aug. 16 4 " tt 2 " " 5027 5019 1 ‘Tow w 5 4 5028 i] " " . 5 t 1 "6-7 5024 " n " t " " " " " " " nN “ " " Aug. 21 te " Aug. 18 " " " ' " Rongelap I. " Kabelle I. " " Rongelap I. ; " " Eniaetok I. " " CU Kabelle I. t " " it " tt ” " 6 " n ” ” 10-22 " 5018 5011 " ” " " 5009 5013 5010 6 5016 ." 10 9 8 7 5012 5 " 5017 5014 "oH §015 1 2 " " " " " 3 Sta. " "oo" Aug. 15 " " " 4 Aug. 19 " " " tt " " " mn " " " " ” Enigan Pass Pigen Pass. South Pass Eniaetok I. Rongelap I. Enybarbar I. Kieshiechi I. I. Gogan I. Mellu Kabelle I.