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Inc L. S. Ship Vinccnncs, Capt. Wilkes.
~ been detained at Iilo, longer than was
fclpated, by the following singular cir
Ipsance. After the return of the survey


party from the summit of Mouna Loo


observatory was erected at Hilo, on the


side of Wailnku river, near the beach,
8fas soon discovered that the pendulum
snld not operate regularly, and that the


ervatlons were entirely useless. Another


was selected for it on the opposite side
tyhe river, and the results were the same !.
e3hat at the last dates, another location had
e2be selected. The irregularity of the
Sements was supposed to be owing to a
snbl'ng in the earth, occasioned probably
'HFubterranean fire, as the natives COM
ned that the water below the surface in


Immediate vicinity was hot to the touch.
5 phenomenon has been noticed before
yhc same place, and it is another evidence
prove that the island of Hawaii is a mere
''Sst, thrown up from the depths Of the


an, while all beneath is one vast mass of
a. and liquifed rock. The fact that steam


PES from crevices in the rocks on the very


pmit Of Mouna Loa at an elevation of
POO feet, shews the general thinness of


crust, and the ncarness of the fires to
! surface of the soil


N the great eruption of June last, the la
enough mainly supplied from the great
4 ter OF Monna Loa and KiIauea, gushcd
like springs of water from the earth in
porous places along its course, some of
ch still remain hot and smoking