Smithsonian Report, 1917. — Hitchcock. 



Plate 2. 



I. Northeastern Part of Lanai, Showing the Effect of Wind Erosion. 



The columns arc hard lava, from which tho surrounding material has been blown away. 



2. Northwest Part of Molokai; a Rolling Plain Denuded by the Strong 



Trade Wind. 



The hillocks are held by Bermuda grass. 



