Page 547 



ECHO SOUNDING 



571 



^l^l n« i ^1t^^W ll fi^1ollw ^ iW^^^'^^^^-n ^ 6 '| ' '^r ' '^ "'t-i i T>i---rTnfr^[iiwnT i iMw ii ni i 'r i ii<n> niiii iiJ5 i i wiii|wMS S i &% ^ T riii°'i - ' -4 



D 



'f^^^iMMmSi^A^mAiZi 



ii tmiiiit i i !ii ,iri ii »itti iii . i «» i !ii>i i ' i<i i ) ||W »»< «'»<i" 



■A • 





f*^ 



G 



Figure 118.— Various interesting fathograms of the 808 Fatliometer. 



Extremely rugged bottom appears in D, E, and G, and tlie second echo has recorded plainly in H. These fathograms are discussed 

 i n the text and referred to by the reference numbers. Note that the scale of F and H is six times that of D, E, and G. 



