ATTa be ptt is | Lt | t f+ = Asuncion § doe po. tee deepe ' ey Hott +++ bk S8° 159° feet 160° t+f44 ' | meinen ! piren! venaee | “= seen MARIANAS street bo. fa ') 163° L, eS 164° 165° Lispes tests { 166° $+ 167° 168° . C + vAnament | 19° wee fe eee sede bet emomp encase | } ‘ Wene!. ; C——1~Area of 18 "4. ele le db| \Marsh survey from which the samples were combined for ion-ex- _ Change analysis enclosed in squares | | —————— 4. femme were dae a ee | 14¢ Pap . 13t— i ns =u 4 ---| ; oe. _| PE 1 at Rangert Ate , Une Asem Tone tree MARSHALL J Me 1 j y—_9t --b- Mamonvite Istends _e + kant fare | Helle Unb aues -+ : — Le. fed Helene Streal| : 4 7% ; aSO Oreheh Atet| +t weesoe Aker ao Atoll Atl 7 Coeen ‘ ae ISLANDS { 5 monet tes Track of run noon Art Atel spam fe ¢: Ponape Ment Att ~ . - feet the Marsh ond area i i| ' 4 | were of the Walton ~ be. Awemtem Atel survey. ‘ . | | | i | I . — iMemors tat > _ ee ISLANDS metas] ' pode MM fe i | fo Fig. J. - . awe anal 4 | i | foe|brea tf. SATAIHOUY AOd CAROLINE | ‘ Towne e 4 | | | Ye ee q hoe Dd veang are: | : — wa ; - Ne fe reef ee ne . Plankton sampling stations of the | 154— : Walton Survey. : - vr : popes { 4 _- 162° --‘ _ ob dee - ka 161° “— xa _ |