234 S. Powers — Explosive Ejeetamenta of Kilauea. 



the sink ; 14 feet at the Volcano House and at the Prisoners 

 quarry on the Kan road ; 1 foot near the Crater Hotel ; f- foot 

 in the Fern Forest on the northwest and on the Uwekahuna 

 fault-blocks ; one to two inches at the Koa Mill on the north ; 

 the Prisoners camp on the west, and the Keanhou Pali on the 

 south. The partial sections at Byron's Ledge and at Waldron's 

 Ledge and at Keanakakoi do not expose the basal thread-lace 

 scoria. Two of the complete sections may be given (see fig. 4) : 



Fig. 4. 



Fig. 4. The ash section on the highway at the Prisoners quarry, showing 

 thin beds of pahoehoe overlain by over a foot of thread-lace scoria (under 

 the hammer), 1£ feet of brown ash, and 1 foot of moderately coarse ejeeta- 

 menta. 



Prisoners quarry 

 (quarry and main highway) 

 1 — 1-J feet coarse ejeetamenta 1 

 f— 2\ " fine brown ash -i 



f-1 foot thread-lace scoria 1 : 



2A-5 feet. 



Volcano House 

 (north end, road-cutting) 

 foot coarse material 



" thread-lace scoria and ash 

 feet yellow ash 

 foot thread-lace scoria and 

 black ash 

 " thread-lace scoria 



4f feet. 



