G60 



GEOLOGY OP SAMOA AND THE ERUPTIONS IN SAVAII, 



eruption, throwing stones over 1000 feet into the air. The height 

 of the smaller cone above sea-level is 900 feet. The accompany- 

 ing rough sketches (figs. 4 and 5) from information given by Mr. 



W 



N 



Fig. 4. — Plan of Tofua. The number 1 represents the smaller 

 cone which was in violent eruption; 2 is the higher cone which was 

 only smoking. The dotted area represents a lava flow from the 

 small cone which destroyed a forest surrounding the lake. 



Walkden Browne, illustrate the structure of the island, and 

 Plate lxiii. shows the crater lake. 



_ 5ta Leve / 



Fig. 5. — Sketch Section of Tofua in the Tongan Islands. 



About March 22nd of this year a violent geyser eruption took 

 place in the crater lake of Ruapehu, in the Taupo region of New 

 Zealand. Immense volumes of steam and also hot stones were 

 ejected. The Tongan island of Founalaei was also in eruption. 



The simultaneous outburst at three points on the same line of 

 fissure is significant. It serves to remind of a similar event in 



