Jeffersonian Republican. [volume] (Stroudsburg, Pa.) 1840-1853, 1850-08-01
From the Newark Daily Advertiser
GeotGEy---The Interior Heat of the
Globe.

Globe.
In speaking of some Geological tours few
months since. we were led TO make mention of the
unsiratifed rocks, and Of their origin by cooling
and solidifying from previously heated and mel
ted condition. This sounds wonderful to all-and
hence we now offer a concise view Of the many
CLASSES OF FACTS which illustrate the interior heat
OF our planet.
l. THE voLcANoEs-These are three hundred
in number, and they situated on every side Of
the globe. II we take round ball, and with a
pencil mark on its outside 800 dots, will perceive
that the ball is very thickly dotted over. So
with our earth. on every side it is pierced with
some Of these three hundred openings, and the
fiery interior shines out most brilliantly often its
molten contents are expelled to the terror of thou
sands OF our fellowmen. This large number OF
volcanoes, their huge streams oflava, and the lofty
mountains they have thrown up--al the interior
heat of our globe-announce that the amount of
that heat is most intense, widely diffused-and
great beyond conception.
III. EARTHeuAKEs--. The cause Of these are the
same as the cause of volcanoes. This we know,
for all their phenomena are the same First, there
are strange. alarming noises from beneath-then
ouacking of the ground-ofien risings and fallings
of the surface. like long waves of the sea-then vi
oIent rents in the solid earth-ihen emissions of
flames, vapors, smoke and melted rocks. If after
few weeks all ceas.s, and the natural calm fol-
lows, then we say there has been earthquake !;
but if the emission lasts while longer, then we
call il volcano-often men are in doubt whether
TO name it a shorthand volcano prolonged
earthquake. There are every conceivable grada-
ton and intermixture among these phenomena,
and the interior heat Of our planet in some way
produces both these classes OF terrific wonders
Permanent volcanoes are indeed thickly set around
the globe, but Tot in every district; earthquakes,
however, occur in every region, and hence they
reveal the great fact that the internal heat of our
globe is glowing beneath every spot Of ground
wherever we may tread.
III. HoT SPRINGS. These also occur in every
country on the globe. They abound most among
mountains, because there the crust of the earth
has been broken and elevated, and q more ready
escape for the internal heat has been formed
Hence in the United States they boil up most nu-
merOusly among the AIleghanies, the Ozark and
Rocky Mountain. In Europe they mostly rise out
of The Alps, the Pyrennees and the APpenines-
although there as well as here, they often spring
up from level plains 1t is the same IN Asia, Al
rica. 0ceanica, and both the Americas They are
hottest when volcanoes are most actiye-sotne-
times reaching the boiling point, though in all ca
ses they must be greatly cooled by the waters and
the rocks rear the surface. The great numbers
of these springs, and their universal diffusion,
prove also the universally Of the internal heat Of
our globe.
~. ARrEsIAs WELLs.-These have been bored
in almost every county to the depth ofmany hun
dred feet for obtaining copious stream. They
are but few inches vide and tube is let all the
way down TO prevent the lateral escape of the wa
ter. This water which boiis up is always warm
At Wurtenburg in Germany, they are used to warm
the water which drives factories, and this prevents