LABORATORY OF RADIATION BiCLOGY UNIVERSITY SF WASHINGTON Strontium-90 in Sirgus iatro (coconut crab) skeleton Collected at Rongeiac Atoil September 1959 Meesn sland Sample numbers Valves 3190 Standard Mean ‘Mena d/m/g deviation strontium dry units Standard deviation > .ngelap 554, 553, 352 1440 216 2570 586 ohne tol 328° 335° eT 2570 334 4580 151 ogo 650, $51, $83 2120 282 3870 468 Jtalla 689, 652 2450 3&7 4309 366 Acoetle 649, 328, 553 2ecn 1044 §560 2128 er jen 655, 858 45350 1011 7900 i9@0 Saen 86i 5250 -- 3900 -- Tuia 660, 662 3050 117 51990 424 Arbar 857, 654 1079 14 1850 71 “ate: The counting error (95%) ranges from 3.6 to 4%,

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