[Photo L. Cockayne.

C—l 3

No. 27. Crop of Rape on Ancient Fixed Dune. Dunes of Western Wellington.

[Photo I. Cockayne

No. 26. First Stage in History of a Wandering Dune: Hole made by Sheep. 5 by 4 Camera-case for Scale.

[Photo I.. Cockayru

No. 28. Lee-face of a "Barchan." Dunes of Alexandra, Central Otago.