The Hawaiian star. [volume] (Honolulu [Oahu]) 1893-1912, 1911-09-27
REV. WESTERVELT
CONTINUED fr,m page nine)

Professor perrett sank a hole down
In the lava through the floor Of the
room they used as a workshop. Here
concrete pillar was built extending
deep into the lavas on the brink o.
Lua-Pele. This pillar was flush with
the floor but was not allowed to touch
it i'm any place. On one side of the
upper end of this pillar was fastened
an instrument with a long, delicatelt
adjusted inverted pendulum or needle
attached at the lower end, the upper
end moving freely This needle was
protected by a glass case from winds
or any other thing which would affect
its motion. 1t moved with every
slightest motion or jar of the borders
of the fre-lake. 1t was a seismograph
to register every earthquake motion
connected with Lua-Pele.
It is a curious fact that this pen
dulum is continually in motion always,
recording some earthquake action in
or around the pit of are. Another
motion or dip shows that the ap-
parently cold floor of the large or main
crater is subject to lifts and depres-
sions. The needle or pendulum is
inclined from its upright position by
every tilt of the floor of the main
crater.
On the other side of the upper end
of this pillar and so carefully embed
ded in the cement that no outside
sound could penetrate, was an instru-
ment, or audiphone, which caught the
murmurs and groans of lavas rolling
underground and the bird-songs of
gases whistling and chirping through
the growing waves of flowing lava.
Here the scientist heard the whisper
ing of the family of the goddess OF
fire.
A most interesting part of the study
of the undersurface sounds has been
to find as far as possible the connec-
lions between these sounds and the
moving masses which it seems must
produce them. The Hawaiian Islands
have been very fortunate to have the
aid of men so thoroughly enthusiastic
and so minutely careful in investiga-
ton as both Professor Shepherd and
Professor Perret have been.
Professors Shepherd and Perret
came expecting to be able to use ma
terial and make observations as Pro-
fessor Jaggar outlined, but they found
conditions almost entirely changed,
and Professor Jaggar's outfit and
plans were totally inadequate. When
Professor Jaggar visited Kilauea the
fire-lake was located as in the large
illustration of Kilauea, and he sup
posed that his friends could easily go
down to the second ledge, stretch
wires across, break holes in the black
hard surface of lake of lava, insert
their steel rods and measure the heat,
but these friends found this plan an
impossibility. They had to stretch a
wire cable about 1900 feet long across
the large pit two or three hundred
feet above the lake of fire and fasten
it on each side as illustrated in one of
the cuts accompanying Professor
Sheperd's article. Then they made a
pulley with four wheels, the upper
two rolling along this wire cable.
This was pulled out over the lake of
fire and back by attached wires. A
strong wire with electrically connec-
tons was passed over the two lower
wheels of this pulley. The rods with
platinum wires as described by Pro
fessor Shepherd were fastened to one
end of this wire so that they could be