Weekly national intelligencer., 1851-04-26

penetrate with the direct view Of the mind into the intimate
nature Of the pbenom snon We think not ~ T'T'T
Take sphs,e mark upon two opposite poles. and trace
circle Of latitude represe,ns that which passes al Paris
Al point Of this circle let ~ imagine small pendulum
vbrspg in the plane Of the The moment that the
gobs turns the vertical pcnss without lhe plane Of primitive
mpuen and the plano Of osc ston changes brt the inertia
Of matter always there, and hs not lost s privileges
reduces 70 the minimum the angle which measures the c
nsbn Of s plane Of oscaon 10 two successive
positions corresponding two dnes ons Infinitely near the
vertical Guided by these ioDs, led 10 COM
sTucs upon any circle Of Latitude series Of small lines sem
sby parallel 70 another, represa nng the traces OF the
plane Of oscillation IN ne different positions and upon COM
pairing their dfecione with the various merdans which
they cross Il 10 funds gnoaa6 u tNIaiaA g.ia91 be
lst That 10 an observer upen the o., tbs surface the de-
Walton Of the plano Of esclasoR takes direction
inverse TO that Of The movement Of the earth y h 4
3D. That the movement Of the psne Of sclAon equfat
the pole to the movement u the esb M proportion
approh the equator where eniirey and that
this movement takes place il opposlss directions IN the two
3D. Thai the angular velocity of tie plane Of oscillation
sqna 10 that othe eah multiplied by The sine Of NE latitude
OF the spot at which the experiment IL pconA whence i
results that thst velocity j. UNIFORM and that the plane Of
primitive impulsen 10 really arbitrary ascS sRsI 99s
We siyewiih heosetc ncaiit whish
We arrive from alfquarers, whatever road tax whether
following M BIssT who FIRST pursued ~ we aks the path
analysis which by held to be hcss, or wheher
hks M LIoUyILLYs and M PoIxso1 we Ee Ourselves be
guided by consideasions borrowed fom scha MICS and
geometry. Ysss s 60a III sa s,,sags stfr IN ssrgsI
Intact these various rppy soley to s simple
pendhlu to that thss Of the mind which q the mence
ment we have geomsncaly defined And il u. borrower,
necessary that s vibrations be fedoce infinitely a d-
mensons In passing from ihsoy 70 experiment t phys.
clan must look 70 be often deceiyed In his cssutors and
II with material pendulum he succeedsrin obeainng
equvocsl deviation in oforeseen direco. A. for tvs the
enterprise appeared to RASH that before at,ucks Il in
'front.' edetemned to ourselves bya preimsM
pement The independence Of the plane Of osciao under
such circumstances would enable conclude from small
facts to great ones, well with respect time sace
round rod Of steel the shasofa tour, in the
pooDgaono of the axis made yibfate plane Ach
distinctly and precisely marked In spaaeby compa son
with visible objects, While yet vbraingy rned
with the hand The shaft which supported the rod ard it was
remarked that although the rod turned upon ITSELF lane
ofvibation pe,ceptby resisted the
Although the rod was short and the ybraions sf short
duraon, experiment seemed very concusive
that in few seconds the number of oscation aresiy
Siderable represented essay Of much longer duratU
Upon due resecon, had only to busyourselss in
procuring the means Of constructing really free penduum
For who has only to appehend difficulties Of execution,
if you must count upon prodiges to overcome then
there is M. FRoxESr whose accomplished talent has
yet been fault 10 front Of distinctly stated probm The
were clearly de6ned fxedness Of the point Of
pension and perfect symmetry Of the apparatus mall m parts
NJ FRoMSSr has been enabled to realize them in admir-
able manner and TO procure for the physician who committed
himself him the complete and prompt confirmation Of
pseconceived idea. g,a .ssrasIsq qst i.. slfa6sat
The first apparatus, which was made to operate with hgooi
sc not than two metres (about six et seven
inches high. Il consisted Of brass Sphere weighing Eve
kogramms abou eleven pounds) suspended BY, stee
wire oa cast iron support staple, strongly xsd in the
roof Of cellar. The pendulum put motion ina given
drecton by sezng combusbe thread, attached TO the ba
and drawing by this thread distance omits po
sition Of equilibrium was held in this position until the
whole apparatus perfect repose Then the thread
burnt By this the ball released without shock
jerk, and permitted TO- osclate 10 well determined plane
half hour alter that plane had 50 changed is direction
that percepble at the very FIRST glance Repeated
multitude of various directions the experiments always
produced the result The plane constantly deyiated
and 1t even turned invariably about the vscan sseh d-
recon that the ba in s successive erns TO the front
the Observer to bear and toward the e
times irregularities observed in e resu the irre-
gularties affected the amount the erection Of the devi-
by apparent movement, similar to that Of the heavenly
vault Il clear that operating with too incon-
siderable elevation In fact the apparatus, transported
70 the observatory and put up, with of NJ
Arago 10 the hal Of the meridian suspended BY wire
meres GAG feet inch in length. immediately assumed
much more regular and apparent march. Any where,
where can freely dispose Of an elevation Of ten OF
metres may study seriously and thoroughly the influence
the eahs rotation upon the movement Of the pendulum
But beneah the lofty does of certain the
phenomenon to be expected to assume ex
tension We have found the Pantheon location marvel
ously adapted the establishment Of gigantic pendulum
Wehave found also in the administration the kndest dspo
son in favor Of the execution Of project which the gnt
Of that immense cuPota Upon asmpe description
the projected experiment. upon the announcement ot the
probable results which would furnish 70 science and
beneath the eyes every on the President Of the Republic
resolved that the thing should be done, and quick sghtning
his high protection reacng even to the last degrees OF
SCALE in less than aostnight the ap
parstus erected which ii remains for to describe
At the summit Of the cupos, ornamented with the paint
ings Of GRos found hampton plug, sort OF cover
which, removed, left gaping ccuar opening me'res
(5 fee n diameter We began BY throwing acOss the aPer
ture strong beam Of r 40 cenmetres 3nches square
The space remaining each side Of the beam was panked
in Through the Of the beam hole was bored scoop
ed out the lower sdhe axis o the hole cOinciding with
that Of the dome II through this hole that the wise
made fast metallic pieces laid upper surface
beam While these were being taken 70 srengihen
thus the point attachment others busy below upon
the circular space the oor occupied by the mosaic and
enclosed BY the mahogany railing To susrd aganst the
srnaGe which might result from the rupture the wire, and
the fall which il sustained the mosaic aoored
over with panks which spread layer Of earth about
20 cenmetres e nches thick There erected at about
the height Of the railing wooden circle metres fe, 81
nches damee divided into degrees and quarters Of de-
Yees cenefed upon the vertical passing by the point of
suspension Elsewhere they making Of strong brass
plate two hemphecsl cups. The cups sodered to-
geher equstoy and BY running lead into them there was
formed very dense globe which, with diameter Of CEN
iretres, (7.Os6744 inches) weighs 20 klogrannes
cola lbs. avoirdupo) This globe, armed with pointed
attached to the free extremity Of the metallic
suffered fot all slongaon Of from Ave to six cent?