Table 1. Gross beta activity and temperature of the water obtained with Nansen casts. Values expressed ind/m/1! in the particulate matter and in the water (filterable portion less K40 at time of collection. Station Sample no. Depth (meters) °C matter*** 109 24 27.81 0 0 9, 000 11°21. 8' N; 110 39 27.77 0 850 162°09. 1'E 111 39 27.77 0 0 0 112 79 26.69 0 0 0 113 114 119 160 24, 68 17.85 0 0 0 0 0 0 0 7,520 770 9, 000 0 850 115 201 13.21 0 0 0 116 244 11.07 0 0 0 10. 04 0 0 0 117 337 118 334 119 W-1 27.81 7, 400 600 Total 1408 16 120 170 Water 106 107 108 27.82 (27. 84)* Particulate H-7 Collected 5/5/58 0 8 Temp. d/m/\** ( 9. 70)* 0 0 0 0 0 120 {2t 416 501 586 (9.51)* 0 8.17 7.22 0 0 0 0 0 0 122 123 675 857 6.27 9.12 0 0 0 0 0 0 124 1039 4.15 0 0 0 513 0 27, 66 64, 000 160,000 Collected 5/16/58 514 515 5 25 27,69 62, 000 120,000 224, 000 182,000 1910 11°19.3'N; 162°09.4'E 516 517 518 50 100 260 27.69 27.58 26. 76 15.79 10, 000 22, 000 3, 800 73, 000 30, 000 22, 000 83, 000 52, 000 25, 800 1, 900 300 10.71 3, 100 30, 000 (lost) 31, 900 919 * Doubtful. ** Correction factor for self absorption based on K29, wee DO. 45,

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