33 



[F. G. Radcliffe, photo. 

 FIG. 16. Mount Ruapehu, from Horopito. 



' 



[F. G. Radcliffe, photo. 



F IG . i 7 ._ The cone of Mount Ngauruhoe, showing smoke-like cloud of 

 fumes and tuff-particles emitted during an eruption. 



