, 1875-12-03
"ETiIElsIC FONCE,n
An Important DtsCorcry..E'onaibj1t
of 9ondtn2 slc1sngt* 0vcr Fircs n,
Cables Not lnnltlatc.i.

An 1mfoFfhnt DtsCOrGry.-ssnnatf1t1t,
Of Sondin2 ,lc1sn.t* orcr yrircs a,
Cables Not lnnulatc,i.
Nsu YarE irlJuns.
T. A. Edtson, OF NeFnr;, n. j., an o'e,t-i4,,
and tnvot,tor. LA, j,st undo discovery sh;ch
it in o8peetsd, will throw nor light up IN sho M,
ttto Of electricity, aid possibly n,a,ifca, so A..
tsoncc Of l,,thlrt, unknown ,at,ral furso, d,
tho night Of Eoy. ~. whilo 5rr. liso aal hi,
assistant. charlos batchs'or, wore sxpori,noo.iu,
In their laboratory, thoy nla1a discovery sairs
Ia recorded rs follnSs III THAR journal:
In oxpt tlmcntlng with ytbr,tory m7ana.. eor,,:,
int Of E'ar Vt Huba a,ecl fa.senc Ut mo tn sni
nsde 70 ribsats by tac,ns nf . n,aan. 70 nn:,.:di
sEhfE coming froi tln at tho Iynnt, Thtt ~
hnso often nollccd bo:nEs tic relays; iii atock btin,s
wlitn shsre wtse itoa ll[as, bs!W!en tl,a atm1Sts
and core. and o.ten IN thc nrw o.ctrio rtn, h;v.r
sarpotcd 4 was ind.,stivo cte1tricliy, ,1 lasnct
tn iptcn u wllea 1t seemed strong tiat * s,s
rcstcd i m!ht 10 .a,nahtnn t,sa tad ,eon
hclh3 ~ the H1nrosIft1n. NO foin that BY ton h,r
anJ portion q e yuestor q: ,s.a1ur viii, ric,a
n,ots' st got tn. HIsrk No TIM conhueted vii, 1
Ina u l'tose of lfun to 1t.
The expsrm,ns,r5 wtta 1c1 to try TIA e.rea
1t different meta s III drawing oft tic Smart mi
a0on fornd TINT cadmium van tlle most aiFec: ~
fnr Their ph:poso. A. bar Of tha meta, ~
'lacoa ncroxs tho ele.trie coil Ut tho ,nRzaot;r
instrument. and long nIro at.ache1 to tt. Illa
electric circuit Was thus 3rained uf lta curron,
Witch Ensscd through Tho cadmium aud thd sub,
HcIuent wire iu;o a gas.i,pc. anl 80 iuto Tia
easth Notwithstanding HIS interruption Of ia
oonttnlity of tn cifcflik 1t mns forurl thai Win
any metallic Hnbgtaace wns brought in contac!
viii! lilc Ras.pi 10 or VITA tto intervening vI,,a
white spark WAS osolvtl w,th Unusual BrIIIinpcy.
Then IL occurrad 10 MI. Edlton ll1n. r,,aibff
thib Hpark might be tho manifestation, Of snmo
unknown fo:co acting ain,al ltanoon4Y wIth o'ca.
trid.tY. Acrordnal5 he a1p ed 70 It tho teal, l,y
which the rreubnce of electricity IL dotectod ar1
mas uatpr'acd TO lind th,ttto tntstns lh:trinon.i
gayo no insl,ca:iou of tho electric preuenco.
4 dotlcato golt!-lpat o!ectroscoro way uudis,
lnroel BY tho now ,nanlfc4 4tltion, cohclnslssiy
proving clthor that electricity tnaY manifest Il.
sclf in ontsrc1y now ptIaBes. or th4k undet cer.
tain conditi1ns IT, gives birth 10 nov aud d.
tinct force. hlr. Edison haa nsrnad ihe new
put otcst bv various experiments, nnl tts fc,
loving roaulta obtaiucl Tint tho rew torcs il
non'polir, r&diaslug IN straight lines tko heAt
thst 1t is capable Of transmission to ludclluits
d,ssHnocs through ais nnins"la:ed wire that i
's not a1cosel pg tho ord,unry rnu-conducsors ii
cl:ctiici.s, aa Ea'a. oc aud that ii js 1otroaet.
iyo. tle spark being ubta1nAbio wtlen tho wiia i.
turned Iack 20 as to 10 ,cb i.aaif. Mr. Edison i
Of tho oplnlnn t1,nt It can lIo male to rnanitc.t
ttsolf osherwao than by tl,s spark. dnd tliat Ii
1nay ho derived from boat INDEPENDENTLY Of eica
tricity.
In order to put 1t 10 a sorera tcBt hd connsc,.1
wiro from his laboratory with the o.duary
telegraph wire, mud us pormtBsou Of tho tcle
ElATl EuInl+uf Ha8 CHaHipa 70 HlAH9 Circuit
estehtng from Nom York To Nov brunswok
\. j., both ends terminating IN bis .aboratory
After paBB,ug through this gredt extent uf e.tfs
tho eclectic current was divided. tho caImiurs
~irc attached, and scrlea OF SPARKS evolved ID
readily hs shouga tho olrcuit had only beon a
yard long. Tho practical yatuo Of thla di.coyasY
consist 10 lis maniostatton Of the poasibii,ty of
BONDING ,noapa.ns OVER cables or Mi % uos insu-
| lated lnstcai OF employing no1os and glass.
insuators, il acot1H to bo 6etossary uplfto ,naks
m attachment to tho railrpnd tracks Of to via
laid in tho enItt, md TIM noseAgo ean bo n
renlIv transmitted "a uv tha present process.
Tho expensive insulated cables now usrd IL.
oceaa tologtaphy csn be rivalod hY caelsa q,
M.tcA cheaper construction. and Ia olttar WAYS tha
present cantbrnus apparatus uccetsary tot utili..
n5 electricity may bo aro,dei.' :.