7 6 



THE FLOOR OF THE OCEAN 



115' 



115 HI I 



i^!3l- 



'-- 123 



121/ - -.. --^ 109-v. >> 



/ .'y-wzsr-'-^r-- 



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131 

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157 """ — ~ — — ""— TV?" 162 

 162 120 l32 



172 179 l64 166 



BO 65 



6 



II J 



]2 $$, 84 60 

 ' A i^60 



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19 \88\ 

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45 



'27 | 07 \\ 



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78 l26 H-' 47 



78 / ,,/ / 



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153/ 



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44 



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26 44 



45 49 



V>V>. 34 46 



\\-|2 37 3 



47 l8 \ LjB 



5 °46 27 V //' 48 



48 34///&: 



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 17^730 

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45 



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157 vH 



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168 I69 ,6-5 J69 ~j*M 

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25 



27 



43 



45 47 45 / 



43 © / 



43 50 ,' 54 \ 



25 f3V » 



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\ 23 47 ', v^ , 



\\ 49 \ 52 ?1 '0 



25 21 



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2, 48\ 56 



■■sr 



13 ; 



NAUTICAL MILES 



-.50- 55 

 45 > 



50 ,-' 54 55 



,-'52 , , 



55 -' 40 



56-' 46 - 



50 ' 23 4 ^=3 



,/43 :;f fy> 



I/' 35 > 08' /47 

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 26 \ t 



43 \ 5S .44 

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28 v.V, 58 



'5' 3 '' 56 



-& 53 



_56 — l42V 



56- 



SUBMERGED ATOLLS 

 PALAWAN BANK. R I. 



SOUNDINGS IN FATHOMS 



AT MEAN LOWER LOW WATER 



Surveyed by the U. S. Coast 



and Geodetic Survey, 1933 



I 



FIGURE 43. "0ROWNED" ATOLLS OF THE PHILIPPINE ARCHIPELAGO. FROM 



MANUSCRIPT MAP PRESENTED BY H. W. MURRAY OF THE UNITED STATES 



COAST AND GEODETIC SURVEY. 



