VARIOUS DUNE PLANTINGS
 83
Agriculture, are fully alive to the importance of dune fixation, and grass planting on several areas has been put in hand. No doubt when the extent and potentialities of the coast-line of the vast continent of North America are realized, its maritime lands of every sort will be reclaimed and put to profitable uses.
New Zealand, with some 300,000 acres of drifting dunes,
                      ROADWAY
S	M	S	M	S	M	S	M » o
                                                                                   centres
 ac acacacacacaca
 AC ACACACACACAC CACACACACACACAC C AWCAWCAWCAWCAW
  Spoced 4’ o'
  apart
       Syeamorm ond Mopl© planted at 8 feet centres Pines and Mountain Ash at 4 feet centres
    S	SYCAMORE
    M	NORWAY MAPLfi
    C	CORSICAN PINE
    A	AUSTRIAN PINE W MOUNTAIN ASH
Fig. 17.—Proposed Coast Road, Rhyl; Tree-planting Diagram
has begun to grapple with the problem. The Report on the Dune Areas of New Zealand, by Dr. L. Cockayne, issued by the Department of Lands, is a model of what such a document should be. It is undoubtedly the fullest and most informing account of the subject available in the English language.1 The report has especial value, as it is written in the light of experience gained locally.
Psamma is the staple plant for fixation purposes. For
1 L. Cockayne, Report on the Sand-dunes of New Zealand, N.Z. Dept, of Lands, 1909.