2. ~ es system was os « San . : 48 ny ake te . ene to run hydecueariie seaticns covery 3, wat ~ 1c miles « a ot "7 Saye a9 we wend ¢. Stay . ode 2. oe anorontinacoly VWiosa we Grpooprd 12 Eanson bottles to a maninia 3 ote pn depth of“ COO meters, c ~ . _ feur bottles. fen * * % a te" Im 2. bowvoon, wo used a shatlbow tostfa wath ” so -“~ Syery hour on At the ahalka] & suedace samvle of wator., = .. . hour, in betwaon, wo took Those camples (?) snip by @ rather sinpie caleium coaay, - J’. - ae 4 o rates wore measured aboavd Tals wes not advances aN ty ol radio teshnignue, Ent wo could verform this as wa wont along. om, wre mets a eye ap Tey 4 4 4a watt Cuyv routs waco prodicatcd semawnat by cur gindings 3in connscticon wy dee . * with the cort stroans, and so on, Lh ° ma gen ae aay Anpycnimately, wa continrved on Comm HUwajglein for about Tour doseocs and came ast tno Magrdancs dowa to Uindanou, 3 up by truck tha fairly senthorn ond of ¢ Hindanou, and over te lisy Guinea uy along tho Philinnpine Coast into Olsinawa, and frou Cisinawa davo the China Sea out just belov Kyusu and back into Japan. On the return trip from Tokyo to San Francisco, we could not follow this sams prozram, but we id take surface sanpics every four hours on the return journey. Rather remarkably, wa found the levels of activity about in tho ranze which wo expected, I would say that an avevrace activity might be in tho neighborhoscd, susatiny of the surface now, of 40 to &) disintegra. tions per minute por liter of water. It is of interast to note that this comosres with G09 disintovrations per minute duc to potassiva--2 moan the normal potassium in sea water--so the dneroase in level is not vory remarkable, but it is definite. You seo, you have your north equatorial curront coming in,