FIJI-NEW ZEALAND EXPEDITION 163 
even dioritic. The cobbles in the agglomerate are grayer, a few 
of them darker, than the matrix. 
The origin of this Fijian Yosemite is a matter of speculation. 
Erosion has had a part but the small size of the streams and the 
low col precludes this mode of origin. That the valley is con 
structional and the result of the down faulting of a narrow block 
or graben is the most likely explanation as the steep sheer faces 
of the valley wall at Mt. Fell and elsewhere strongly suggest. 
Although Fiji has no evidences of recent vuleanism the great 
quantity of rock of this origin in the interior points to much vol- 
canic activity at a former time. That there is still smoldering 
heat beneath is proved by the fact that there are hot springs just 
above Namosi while near Delailasakau some miles below Namosi 
we visited a hot spring issuing from a parti-colored, vesicular 
rock. The water is clear and too hot for the hand. The flow is 
strong and there is odor of sulphur dioxide. Mr. Fell said that 
earthquakes of very small tremor occur but rarely in Fiji. 
Upon my first arrival in Suva I expressed to Mr. Fell the hope 
that I might see by way of contrast a part of the north shore 
where the rainfall is considerably less than half that of the south- 
east part of the island. With customary generosity Mr. Fell took 
up the matter and by use of the telephone and written corres- 
pondence had the whole trip carefully planned for us in fullest 
detail. So, on the second day after our return from the Namosi 
trip, Mr. Glock and myself took passage aboard a little steamer, 
the Andi Keva. This is a coastwise boat of 106 tons and was the 
only mode of inter-island communication at the time. In order 
to negotiate the passes of the Rewa delta at flood tide it was 
necessary to board the boat at 5:45 A. M. There was a drizzling 
rain and it was pitch dark as Glock and I stumbled through the 
narrow streets leading to the wharf. In spite of all we had read 
and heard about procrastination and slow-going in the tropies it 
was well for us that we were on time for she put off quite prompt- 
ly. Her skipper was a fine appearing, business-like man of rather 
unusual type—a half-caste Fijian. With him were his two robust 
children whose mother was a Samoan. They were pale-faced, 
straight-haired, and quite comely. 
The voyage was pleasant, the sea being fairly smooth as we were 
inside the barrier reef the whole way. The delta of the Rewa 
river is a large fertile area just above high tide. Parts of it are 
