pared from the Hydrofe'raphle Charts 



I 

 0. 



jtlng the eldpe of the ocean >)ottoiii ore 

 pundlngs ot every ten fathoms down to 

 e next lower contour is nt 1000 fathoms. 



rding caused by the reduction of the size 

 cf the soundings given on the original 

 emitted. 



iu.".iS^i.,^ ^ '^^^ either rocJcs cat off by marine 

 j,„; nature Is not -knoiaT). 



re showi in i*ed. 



If 9 are ehovtn in gretn. 



/^. 



