The New York herald. [volume] (New York [N.Y.]) 1840-1920, 1853-09-12
THE CRYSTAL PALACE.


Tbeobicot 10 be soaioed ths Of lsasss ths ~
lumips',pg apparatus Of lsh bou~. Il effected BY 49,
lhoire al ,bs emsrstiDg pciut 10 fcosa
and after refrsctpg benciDg thin from thsr osiasl
ps be. projecting then forwsrd In beam whose aais
ctr cides III the axis tns lsns.
The les, notice Of The application o. leases 10 NsAS
bau'es u found In 5meaons OF ths E1dystsaa
~hsis he sstos that Lo, don opuoaa 1850 prspsAA
erDOipg the slsss Of the sntera radius se ssvsn
feet Fix iDcbss Many attempts made sasss.
openly, at dife ens times, bat never sucoeeAl,
oaIg to ths imperfect 6guro Of the sns -
In pure state Of the sssf and Its great thicknss wA
rendered tbs ns In It's effect inferior to the rsAesngs
tn In The suesest.n Of toildiDg The ls0ss II
seOsiste pieces. thus svodf ths gruat thcknss Is De-
to Cor dotoe who early 1773 polluted out the ~
vsbtsgce Of thi method In 1911 SIR David BcswstsA
In tho Ednto'o Cycoped q" proposed this plan; a.d b
1922 Fiesnel made toe same ingenious nsds e
coost Scttsg bess .trumsnts, ,sreA
In 1872 In ignoIanc o. thu ysxs laboss o: hs ro
d~ccssors To Fre, belongs tho additional and uaY
great Uefit OF bet, tie arst to execute well
DE- Ign and In COZ juc c'fou With NM Arss0 aud Ns-
thieu Of placing possrfni lamp In the focus Of ~
kns--tn fact applying 1t to tte peachcsl puroos =
q lighthouse. Hence the moth d has b,~n oAlleA ~
FeItl system. introduced into lighthouses al sv
the world, sud which ui'hn fog years past, has Dssa
introduced into this country
would 10 out Of place. iDdes mpracticsbie In -
dce Of this tnd to into all the details Of the pe
mita cusuobs and the dfsrent proce ssss os q.
ms OF hese sDsesouly general outline Of ~
Various stepe bo given For particular as-
count the rcA6er to very useful puoiicsts
~ alan Stevsn,on entitled "Au Elementary 7rsatass a
tho H'story. Construction. and Illuminating of UsAt.
bouseN, !" published 0, John wcae London, whore ~
bo found aoe and detailed discussion OF tn
.hnto k.n~A
10 the calculation Of tho surfAees Of tina different par
These calculations requiring knowlsdgs Of tho kehsr
bfanh hes sf ra,heuat,cs exceedingly minats aaA
ccDpcsted the p,ro cal data which they based
bong The focal lena, and tho retroactive index Of tha
gie@. The elements o the different biog oacu.
aed the eass IN moulds excecdng the intsadeA
s'EH OF the Gnthsd part. Toe gls,s hitherto used u
Farce is crown l.ss which, though It hes lower
fscs've p,wer tnn aint glass, bosides having sSgaf
sretnish tpge. yes 1t % lily b obsalsaA
Of h noetDeou, quality and H. moreover, Less sus;ssk
10 otSroratitn fro attn osphcric tnH ences ID tAss
fore peculiarly suisable for In the exposed poAdcnn
gorssaly occupied BY lighthouses The different pssAs
being cast, tbe3 grouud to the proper sss b. Ar
cbipesJ This psoceSs Ia very diHouls equrisg -
greatest care not only to the optical propsr-
'ee Of the euinces bat to prevent the tran pareaoy o<
the elass t*iDg affected by scratches. Lsss comes -
sdjattncnt of the different parts Ia thsir rssesoa,o
france aDd the unon Of the whole produos ~
desiIed eGsct Tho different parts Of each lens 80
uIied by bronze frame, and where the glsss edesa
ceme in Or Dtsct By O nne Layer OF csmcat The vsEy
al delicate edges render this operation hAxsr
they iaole to be spintered In tho ns
of unski full persons
There four different orders OF these nsruments
varying in and power according to the position tAy
bavet0 tcccpy
Tho ayperGus nov exhibited Is Of tho arst order
Flcsue ord of the character called Fixed variod By
fashes.' It's poscd of revolving Franc soasit-
tIe az low OF four and dome of elecen csta-
dopuic irgs Of glass These rings Triangular psaa
ent ,tructed ard asted In their frames shst
al tie ieys OF heht iDpiDere them from the Lamps
piscsd Ia their commen focus are sfte being rofneesd
where they erter then reflected fiom next suracs
and eeain ,ef,acted from the third, thro out In .
hoszon'al boam In ALI asmrtts, that when tho Ae-
gerutus Is illuminated observer stapd!pg N
sEy position viii Mc fixed bsau Of igA
from tho rings, above snd below about fo1r inches
Ia diameter, with height eqaal to the height Of the
rings This constitutes the axed light Of the
The central part s IMPOSED Of tseutfou pauss esc
containing section OF annulir plano convex Isna.
Each farel fo,- feet three inches In height (the d.
eter of tho lens aud nine inches vide Taey azs
srrsnged vertically in the frame, having com
focus Each panel occupies "a Of circle or af-
ece,ees of the horizon and ss the dvergsucs oe
The ier doe the uze of the ao of the lamp Ia lit
TO over ase degees thsre be twenty four beams Of
intense btiliency and covering each epacs OF fso d.
oes pEotc cd from this part Of the apparatus ADD ~
tween these beams there vii be sent spaces Of
deg each without light Now t the apparatus Ia made
10 revolve in given time-say twelve miou 'ss-
aid the eye Of the observer is fixed each panel will b
thirty seconds in ing, and the space covered BY tho
beam of light being third tf the space occupied By
A.-,nk ksw Ar~u ~
econds and the observer viii perceive succession Of
brilliant aashes each long, sep sratsd By in
teyas of knees tcfpses Of twenty seconds dura-
ton. urn the whole revolution the beams from tAs
rings above ane below will b. visible and thus s formed
what 10 called The Fixed lght varied By flasher" u
by increasing dimnihipg the period OF revo-
Iucn tho duration CT the lAsh will be increased 4
mnished end in the ratio Of two to one the echpses.
The b. ht proceeds from siogle lamp which is Plscsd
Oh ths common focus. It Is ordinary cMee lamp
havg burner eenoentrc vicks, the largest b.
in litts anter four pooss In diameter. These sicGs
ere supplied with oil from reservoir below BY fosr
pumps moved BY cloShvork. The whole apparatus =
also made TO revolve by slockwcrk
When consider the scientific knowledge required 10
cca ate tbs elements Of apparatus of this knd an4
the Mechanical ski icssDuiy necessary 10 ssa-
s.ruct and just the dercnt parts, aud then witness
the result but acknowledge that IT is ons Il
the most BEAUTIFUL results Of the application Of science
TO art that o5srn times Of wonders have pro-
ouc.d; tho isepg of aomaton s greatly beigstsn
&C WI CO 20 reflect the humane object afectsd-tbs
warpre OF tho bOa mariner Of tho apProeah Of dsngs
nd tho safety, not only TO e to the greas
cial interests of tte world.
Ibis apparatus Is fiom the mandatory Of asury
Lepapte Paris. 1t has been recently imported By the
government ard will be erected in the ushth at
Cape Dat,oras tho building la ready rrcsvs
IT. 1t Is exhibited by tho courtesy of the sosnouss
Beard and has been erected BY Lieut. George MesdA
Corps Topcg ashca Eug nssrs TO whoee notes NO are n
debted for the above description.
wAsuMaToN NATIONAL MONUMENT FUND.
Caah on hanc ....................$2 81 y67 40
Contribution from Samuel Hughes, agedl9 2SS 90
Contributions for Sept. nber g.......... e3 2S
Contr1bu,iuna for Seotember 10. ....... 36 Sc