Weekly national intelligencer. [volume] (Washington [D.C.]) 1841-1869, 1851-08-16

p,oDoon 10 the centrifugal influence Of this whr and con-
eo.,ept dminusion Of pressure and density within IL w %
the centpeal force consequent 70 me nydrosauc o.
matte effort restore the normal equilibrium Of pressure ana
density.
II follows that there il nothing in the phenomena Of Pgmy
hirlwnds which can account for greater display gyaoy
Than thai which may have been caused during the
with the detecting body produced has already been 90
ling from twenty to forty miles per hour and stsonay
bv NINA, he al very ef endurance and that the result
inc rysop admitting 10 be thus Produced must 70 evan
ecens in Of the IsPd expenditure Of ih gyo
~ momentum.
ON ensv or Of level which sustsns little vnwnds
and whrpools must be wholly inadequate 70 perform similar
Office in the case Of disks Of atmosphecs neoes
sary 70 constitute whwnd storms The smalnss OF the al
ti,ude In proportion to the width Of the question,
l. feature Of great disparity. and lessons much ay analogy
which might exist And were possible that mass Of air,
Of which the altitude should bear the proportion TO the
Width, a n small whwinds, should extend on six miles
in height the portion occupying the upper hall the con-
tanning space having consequently only oneoukh Of the
weight Of the lower half would create feature oil great IN
compatibility from the diversity Of momentum sndcould not
be- fairly compared it, cspabiiy Of uniformgyraon,
with comparatively minute masses, Of which the pper and
lower portions could not differ much in density. !.
Agreesby to the consideration above stated. inst i will
be admitted that no portion Of fluid mass Of whchhe parts
are neither actusted BY any cenpea force, cned BY
other portions Of the fluid, can revose without being
disspsted BY the centrifugal force thence arising and that
If externally confined BY other portions Of the sameud the
revolving portion must give of ts momentumamon the sur
rounding portions until il becomes evanescent
The two stages Of existence suggste respect the gen.
Grafton and endurance Of pgmy whirlwinds musf course
arise in the Of whrpools originating IN iquidfrom like
causes Those who have looked along the wakef ship,
sailing so swiftly on tack to require the equnt move
men Of the rudder have noticed that she eses behind
her succession Of little whpoos. Each Of aese appears
% originate n the following wy AZ escs0Sa eonon =
!,,aa.. Win sIe wafer through vcn We Nv aPay
gliding removes from the posteET space potion of the
fluid necessary to the level The hydrostaic influence Of
gravity docs impel the water with sufficient bce to
bic 1t Immediately to resenish the hiatus thus made; and
there s greater desyn the accomplishment ofhis result
since the liquid being impeed towards the hatuom every
side conflict between the consequent centrPea currents
ensues which produces whil and countersctig cenrif
gal force Nevertheless the whr diminishss gadualy in
diameter and soon II will be perceived tht quite
conssent that eenpesl currents meeting within focal
area should be productive Of vertical gyton, qukening
the axis is approached
Yet trust has been proved b. utterly impossible that
any gyraiion ia the whole stormy mass can disy any Of
that violent motion Immediately about the centre which is
admitted take place in tornsdoes and in hurcaps
In addition TO the objections above made 70 thpossbily
Of enduring gyraory motion being impaired tea mass Of
air from three to thousand miles in diameter an Of which
the altitude cannot be than hundredh PIT OF its
width, it, friction with the land, and variousrug0ses
to be considered. We car make top spin upons apex,
but not upon it, obuse fiat end. No one would Undertake
to make cylindrical solid turn long one OF its bses how
smooth the supporting surface. As little void be
expected to TO revove upon water duraby IN obe
dence TO any transient impulse, however ocble does
not materially alter the case that the superintendent disk
should be fluid That due 10 the icti0 which
takes place between wind and 10 demonstrate by the
fact that they assuaged when, BY means Of oil lat fc
ton prevented Hence it is evident that whaevemoion
Al thov ne
wind.
If an estimate were made of the momentum refsite to
produce all the created by hurricane IN tweing
from the place Of its nativity in the West Indies to ID banks
Of Newfoundland would. think, much exceed ~ that
could be impaired to an aeform Of the diametcal d
menson assigned to whirlwind storms BY their advoes
In any whirlwind travelling. admitted, from tsty to
forty miles per hour the velocity side must bel least
thirty miles more and the other At least thirty mis- less
than the velocity the limbs not effected BY the prossive
notion course, if the mean syratory velocity beighy
miles, the whole velocity the side would be ftynes
on the other one hundred and ten miles lnevtab the
violence which conflicting bodies would experience w be
the squares Of these numbers and consequently the eoend
ufe Of momentum would be nearly i've times az geatn the
southeastern limb as on the northwestern limb.
When solid in rotating meets with resistance hany
part whatever the result impaired equally TO the wbe
30. :; aa, especially eIasic nuid would not an in e
lty Of density arise Inconsistent with durable gyat
Moreover, since the upper portions Of the aerial whng ms
could be directly subjected this cause Of retsrdat
would not conflict inevitably between the upper d
lower portions, causing loss Of the rotary power
Il must be evident, from the opinions which have 4
pressed that should have expected that in the scis
c world the hypothesis in question could have received
countenance But the fact has been otherwise and eos
have been made to found the Hypothesis practical rub
for escaping from the parts Of storms which, agree
BY to my view, could only perpex and misead. II
In this point Of view il will be admitted that the quesie
at issue has high practical importance, and that the moi
imsy the foundation which the whirlwind theory BIZ
been erected the has been important to give con
plete refuiation.