, 1880-03-01
EDISON.

The Light In NIelilo Pnrlk-An Ace
count Of Just What 1all*on Has
AccomplIshcA-The Lifetime of the
Electric LampH-An Approximate l;H-
innate Of Thoir C0st-Iathctn"flenl
N1lntuikcs Mndo IN me Laboratory.
Nrts Yark Sun, Ft&. q.
II IA now nlt3ut IL unnth and Il half sincc Mr..
Edison lighted up tho streets and dwellings nt
McnIo pnrk with hts electric Jets. During this
pcrith sufficient ,dkta hnyo hctn obtained to
mako Il fpir cBtlnRt0 Of wk,nt has thus fur been
accomplished. il Is certain thAt during thla
pcvlA uighty Ashts havo bcen kept co1lstustly
uylow th,,ulgA tho ngeNcy Ut two dy1,ano-cicc-
trio ,nlchiuts, cnch Of five h"fsc- power Tho
cost Of rTlrpjng largo stcnnl.engno In this
city Ii ops cent per hursc-p power per hour.
Now, siycc eight electric lights aro OBJ
tui1,ed pr horsepower. 1t is argued, each
lIRht will cost one-clHhth Of u cent per hDur,
Carbuaottcd hydrogen x..s costs larRe consumers
In tbs city Fl per lnN cubic feet, nna an,ntl
lllsttng tho aycrase cost ol g1la to bu Si.h0 per
Smt three fftha Of . cent per hour, aFa!nss one-
strictly aceurate, It should ue said tint on sarno
dnys only from slxty-tlye y scyenty;hve lights
hay1 been axw While T. osheT ,a times Thsso
occasions, however, hAve been nsre: Tho
vnr!aMc> was causcd BY the sudden crncktng of
ion ot thy carbon loops: ,Notwithstand.
9s Fun ' eiart Spssa 1ps Which, shs aurase s
3, averse en hps sfSxs SSs 4a s sou 'nS
sof " aars III Esn Ebss ars as III xht i %
9ulred IN private houscs TO bo 1--WE hours per day,
thoso laEns would thus average eighty days
sait was atiaincl, 10 enn"al Sis sioTes. Whethor
this vii! bring butter. result, by preventing tho
Ftps';Se a, lrom ,cra,ckIius: y, T. to BE- seen.
hofscshoes withlM the lamps h!ts not, thus f9E,
boom sAtlsfacturily meaa'irrd. II ts Impossible,
ssy s5 81 Ssp I
Tho question, too, Nv to tho amount 0f mnlootilAr
totsion and dsintegratton that tho PARTICLES Of
ssa saEl1o o sar yc whs Ss satSS p
ebrAtcd ueBs!cr tubes have been known III soIno
instAncGs to , MaLntn!n % as Sasu.!n ~ for twenty
pcrfcot VACUUM than 0c!sslor did. It Is Vol
kno~n nas perfect Saum Is ,,ot ata'a.
globes without OF fifte,n pounIt 70 tho
squire Inch, some Oxygen must 9alu admittanco
asnSunt @ int Of % ca.nbustion gong ou within, md u
CONSEQUENT losa Of ros1atlnco tn tho carbon
loop. Photon.otno tosts hsvo been Inado. and
comparison has becn inate also betMsun tho
e,uotFy lKht md Ess. ju' ny nssn.ral!4inE s! the
' hssd rs. 1St
wUr0 far frou1 satlsfuctor., 1t is said by sosno
TINT the many Interesting Experiments at tho
disregard Of ex1ct measultuloAt and rcglstra-
ton Of results, optical, elctrieal, and economl'
cul. Yhta IL Hatl 10 bb 1l,eclniiy the cAse II
il alleged, arr made from t.lso premlses, W that
tho conclusions result fnisly - u natural cu1.-
sequence, hi. Edison hastlf IL not u nIntho-
listicAn, and 1t " Allegcdthnt he IL sometimes
irl into errut through his assistants.
Tho fact that un eighty otse- pnWcr engine Ia
at work constantly In tho c,9lne-r room, and 0nly
from eighty 70 ninety lshta aglow. puzzles
many OF tho visitors to ~ Park. This. bow:
over, u thus eaplaiRcd* Al the beltlng and
| engine, and consume tho hol0 power, With tho
exception Of tho teu horsepower that 9ocs 10