F. A. Perret — Some Kilauean Ejectamenta. 611 



Art. LII. — Some Kilauean Ejectamenta ; by Frank 

 A. Per ket. 



Impressed by all that has been said as to the essentially 

 quiet nature of Kilauean volcanism in modern times, the 

 observant visitor experiences a mild surprise at finding on all 

 sides the most conclusive evidence of explosive action, of 

 which some of the products, by their superposition and fresh- 



FlG. 1. 



Fig. 1. Kilauea. 

 lava strata. 



Main crater. Detail of west wall showing ash and 



ness of aspect, can with difficulty be relegated to the time of 

 the last recorded great explosive eruption in 1790." 



The walls of the great pit-crater, in whose exposed strata 

 the investigator may read the story of the long ago, show in 

 most places, it is true, a continuous series of overlying lava 

 flows, but at other points — in the azimuth planes of the prin- 

 cipal winds — the series of rock layers is interrupted by impos- 

 ing beds of ash (fig. 1), while in regions of more recent activity, 

 within the greater pit, erosion has revealed a depth of many 



* Some say 1789. Several explosive phases occurred during the nineteenth 

 century. The absence of reliable information as to these products makes 

 one more than ever regret the days — now happily past but still all too recent 

 — when regular, systematic observation was not carried on at this volcano. 



