Trans. N.Z. Inst., Vol. LII. 



Plate XI. 



Fig. 1. — " The Heights " basin, looking north-east, showing topograjihy and present 

 distribution of drainage. Remnant of original stream in foreground (centre 

 to right) ; outlet of same on right bej'ond margin of view. Spill-over outlet 

 on left. Gorge and trenches of ]:)irate stream in distance (right to centre). 

 Trig, station, Arapaepae No. 3, 1,210 ft., in distance on left. 



Fifi. 2. — The valley of the Waireka Stream, looking east towards its narrow outlet. The 

 old alluvial flat is now trenched by the slight rejuvenation of the stream. 



Face p. 186.] 



