PLATE I. 
F ig / 
Fig 3 
F'g 6. 
DIAGRAMS EXPLAINING PROGRESSIVE STEPS IN THE FORMATION OF BARRIER DUNE 
When the dune has assumed the form illustrated by Fig. 4, grass is planted, and by extend 
ig the area planted towards the shore (to the left) the subsequent form of the dune is influenced 
North Carolina Geological Survey. 
