Smithsonian Report. 1913.— Epry. 



Plate 10. 





2^-^'^' -•V^ .^-'^- *- -^ -- --.^ -.J.-^Z r*r,-^ «-^. ■-** -."> 



-'^^ 



^^.*-«_'^'\'-^jJ^ 







Fig. 18.— Mud Bottom in the Stier of Lesconil (Finistere). 



jte • .^ « V w.'' 



It.- 



Fig. 19.— Desert of Mud at Low Tide Between the Mainland and the Island 



OF Oleron. 



