Trans. N.Z. Inst., Vol. Llli 



Plate XXIII. 



[//. Winkelmann, photo. 



Fig. 1. — The Needles, north-east coast of Great Barrier Island. Lofty sea-cliffs are 

 typical of the northern coast of the island. 



[U. Winkelmann, photo. 



Fig. 2. — Breakaway cliffs of Whitecliffs Range, near Whangaparapara, viewed from 

 the north. Mine-workings in altered andesitic rocks can be seen below the cliffs. 



