a—l 3.
No. 20. Sand-drift from Shore killing Grass in Dune-hollow. In Centre and to Right Mariscus ustulatus.
[Photo L. Cockayne.
No. 22. The Sand-collecting Shrub Coprosma acerosa building a Small Dune. On Left almost buried.
[Photo L. Cockayne,.
No. 19. Advance of Wandering Dune stopped by River Turakina. Wellfixed Portion of Dune above.
[Photo Tj. Cockayne.
No. 21. Scirpus frondosus building Mounds on Shore. Reef-point in Distance. North-west Auckland.
[Photo Tj. Cockayne.
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