For the Rights OF AM
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YOUR readers, as may be deslrous OF know
ino something of the principles of natural
Philosophy. And as intend occasional
" to furnish the Literary Department
Of your paper with something appertalnng
10 this science, it may be well to remind
YOU, that you are not to expect any origin
ality on subjects Of this nature.


A writer on Philosophical subjects, and
on the various Phenomena, or "descrlptlon
of the natural world" can not, IN the
present improved state of the science, offer
any thing new; The Erudite are to pass
these subjects, whenever they appear, cn-
noticed, as they are not intended for them,
but for those, whose advantages may not
have been such as to make them IN any
degree acquainted with the present estab-
lished system of Philosophy, nor with any
of the Phenomena Of nature.


CAUSES OF EARTHQUAKES.


An Earthquake is violent shock, or
shaking Of the earth, sometimes particular
and is felt only by one country or nation,
and sometimes general, and felt by several
nations at the same time.


he prilcipal agent of earthquakes Is
subterraueous fires Our earth abounos
with subterraneous caverns, canals, ano
veins, some Of these caverns and veins are
full Of water, nltre, sui phur, and bltumln
Gus. or Intiammable bodies which produce
FIRE Henc. II is not difficult to concelv'
the terrible effects which may arise iron
such confined air, or water, particular
when acted upon by heat, they in hig
degree became rarefed, and expand


We need only recollect that the expar
sive force OF steam, is not less than tWent
eight times greater than the force OF Gul
powder, ana we will redily imagine Wit
what power and violence, air when comm
ed deep III th,. bowels of the earth, mu
act III It's etfort~ to dilate its volume. LII
same with respect TO subterraneous char
nels Of water, ii by any cause, its cours
stopped in one direction, It lneVltab
must find vent by some other way, al
thus, in It's exertions for vent, undermine
the earth to vast compass, and by til
action, throws up the earth by which


was confined. This is always accol
panied with an alarming rumbling nois


trembling Of the earth, and often to


destruction of whole villages, and t


water which was before confined to t


internal parts of the earth, being in hi


degree agitated, rises to the surface, a