Thomas. — Geology of Tongariro and Taupe. 353 



EXPLANATION OF PLATES XXVI.-XXXII. 



Plate XXVI. — South end of Lake Taupe, showing volcanic mountains. 

 Plate XXVII. — 



Figs. 1 and 2 (from Hochstetter). The cone of Ngauruhoe, as seen 

 by him in April, 1859. Fig. 1, seen from north ; fig. 2, from 

 west. 

 Fig. 3. Ngauruhoe, from Maungatepopo, February, 1887. From a 



photograph by ]\Ir. A. B. Wright. 

 Fig. 4. From Papakai, March, 1888. Showing top of crater very much 

 crumbled away. It is very unsafe to walk about, the ground 

 being hot or rotten. The bulk of the steam which issues from 

 the crater is carried by the south-west wind directly over the 

 crumbling lip (A), keeping it almost constantly moist and clear 

 of snow. 

 Fig. 5. From Papakai, ^lay, 1888. Showing new break in eastern lip 

 (B), which occurred during bad weather, in April or May. 

 B was composed of blocks of lava. 

 Fig. G. From east end of Pihanga, June, 1888. 

 Plate XXVIII. — Tongariro, from near Rotoaira. 

 Plate XXIX. — Sketch map of summit of Tongariro. 

 Plate XXX. — North Crater, Tongariro. 

 Plate XXXI. — Lakes on summit of Tongariro. 

 Plate XXXII. — Lake Taupo, showing old lake terrace. 



