34 Table 1, Radioactivity of Plankton, FilterPaper with Residue from Water and Filtered Water (less K*~). Plankton in d/m/z wet Filter Paper with Residue in d/m/liter of water Water in d/m/liter Flankton Sta~ Sur- tion : face H 1300 2300 2300 9600 30000 23 O 120 0 490 O 670 180 1100 130 2A B C 1600 5400 7900 110+ © uLO 560 89 E 3700 $200 3a B 4100 C 20000 D 36000 i E 8400 4! LA 2900 . © 15000 E 12000 4 en ot oo wkd ‘ mo oa ht me woe te Bo ‘ely= 4 . . D 3300 52000 Z 11000 100 10D QO 180 62 100 O 0 0 240 3200 100 14000 320 600 0 280 400 1500 500s 530 180 #89 180 0 2110 Oo 510g 390 850 420 370 1300 1700 0 0 O 40 190 440 63 130 2700 180 180 190 180 180 oO QO 92 180 Oo 2200 «46 2530 Oo 360 190 3400 340 290 250 1100 230 0 0 1900 C 7200 0 380 Oo 130 #180 D 57000 B 16000 75m. 92 2300 63 63 0 0 0 100m. Sur- 50m. 62. 6100 sk 17000 Water 440 650 2900 B - 25m. lA B C D £ D 21000 oH Filter Paper = 180 180 250 2180 180 - O 250 0 0 face 25m, 50m. QO 1100 0 Oo, 0 O0 0 Oo 0 0 1500 300 75m. - Oo) 0 100m. - 0 0 0 0 C- oC 0 0 440 2400 220 0 : 0 0 100 460 1700 620 1500 1800 1400 2200 440 0 O 0 660 0 0 0 0 4 j i 1800 1500 2200 1800 1500 48 0 0 oO 380 0 0 - 0 0 - ~4 0 8130 <B80C 4200 4000 2600 600 46 580 1100 440 660 880 2200 440 O 1300 2900 210 42 5100 1100 400 1500 120 1600 “ j i ' 5 1200 1200 «eOS«=i«as:*=i«aSC«GD-=«H|Z_—=«4|OD. 2200-1500 0 2800 1600 160C 4 93 62 0 84 120 1700 62 8h 160 62 0 2000 2200 1600 1200 89C 1800 8800 17000 10000 30000 520 . 740 740 buOo 590 380 590 4 | ; j i ee

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