56 



SOIL PHYSICS AND MANAGEMENT 



brought about by plantings on the windward side. In Denmark, 

 Prussia, Scotland, Massachusetts, and North Carolina, beach or 

 marram grass (Fig. 52) whose roots extend to a great depth 



r 



Fio. 51. Wind ripples on sand dune. (Cross, Chamberlain and Salisbury. 

 Henry Holt & Co.) 



Fia. 52. Transplanting beach or marram grass. (Bureau of Plant Industry.) 



