, 1879-02-20

of fusion. The monent the wire mclts the CIR
cult round the armature Is broken, All instant
rcllci from the fahor thrown npon the arm be-
",ent @ of ihe est hcrc e deveIopea % nurinr the
period nf turning the machine certain nt1,otliit
OF connbustiblc substance wns oxdtzcd hr burnt
III tho mllacacs 0t nv arm. Had u honc nn fS-
tcruaI work, the matter consumed Woi!l.i tnFe
produced definite nf1io,s.,t of heat. Nov, the
muscular heat actually developed t!urinE the rn-
tattou Ut tile achino fell short Of th*, definite
amount, sr missing heat bci1ig reproduced to
nl the other parts Of the n,acllsnc. Nele,
then, thc clcrtttc current iutervcncs he
tween My, muscles aml the arucratcd
ess e1astly yt; as !. s,,,ntl did moment "n.ra,c, a
irat. Tho electric current ts 10 nit intc1ts ana
pnr,'oscs vehicle which TRANSPORTS tile t,eat Of
muscle nlua 1Mstcry TO any distance from tic
hearth where tic iuel is consumed. Not only
tcnsi(lcr Ut magical power. Thu Temperature OF
nv arm Is, in rountl numhore, 1O0 degrees
Fahrenheit, AM, It Is by the !neMsiflcat!nn 0f this
which reqnIres heat Of 3,W0 degrees Fahrcu-
l,clt to t'au it, has been reduced to the molten
Zinc, rs haro said. is d fue! fur too expensive
to permit of the electric light produced BY It's
combustion being used for tho common pnr-
poses of life, and you will READILY perceive that
tho human muscles, or even the muscles Of
horse. would be more expensive still. Here.
cnal in furu our machine md IL IL this cnuIuv.
mcnt Of our chcapnst fuel, rendered possib{c
by Farn{lav's discovery, which opens out tllr
prospect Of nur hstng able to apply tho electric
i viii ruiearnr tn u,,,atrote, in "A etr,n,c n,an-
ncr. ~ '"''A'1' =" " '''''''~ ''''"
@ Mu ,n,sox,. .,,xor, uonr op rrrc7p,c
1LLuMfNATIoN,
taking advantage of what Ohm Inns tn,lght lis
regarding tllc laws Of the current, al,d what
Joa!c nus iY,fsht US reEardng tsle relattnti o1
resistance to tue dercloItncnt Of tight ats' heat
From one ci1d Of d vultn!c battcry runs wire.
dividing at certain pont thto t's" bfaticilct.
Whtcl! reslnlte III q s1i!tsle wire connected with
INC ossier Gnu OF tlle battery' FROM tic posnlyo
cad OF thc battery tho current nasses avst
through tie single wfre to tfe point of junction,
Tere u tt!Sldes Itself tetween lhe bfailches ae-
SoEdlhe 70 "c!l"ktlown law. tne 6rhneHce
nc eqnails resistant, inc current uls1ues hSeit
snuals uet"ccn tlen'' ~ ons ui',.lS'1 I9 ~, ~ M lsse
rent s;,f ci,nnso e ~. fronr ."ti, ha .trt ia,v
ia tt,t Tin nmn,,ttv af c,,rrrnt Ia inycrsrlv nm
nnrtjnuai ~ th, rcsistnnre. 4 ciear iInaue 0f
H.. np,,crss !. tcrlrad frnn tha ,innnrtn,r,,t ~
,rn,ar. WhSn rjver meets m isI,,d il
uhstnc1e 'mtns nn ,t,srwa,,is ' reuni.,np. II II
M. ttyo hr"n.b trtIs i" cn,,ni in tcnti,
with, mi, it,si;atinn' fh. watcF will 1lylc H.,
seli ca,,nliy bctwrc,l them II tlley 0e 1,ncauu,
t ,,n, ,,,rs, ~ AT na IN ,hc cosn ~
thr wntcr' IN m1v herc m in,ctn1te nt,,nhcr ~ ~
sia,ts rn''rn INV ~ i,ct'nita M a,,iniivi.nn m
] trMnk strcon: "a IN IN I'm rasc oi cIcrtrir,tv @ wc
mnv ho ~ in.;,co, nj ~ ~ ,w" hrnnrhca onr m,mhrr
~ f,ra,,'ct ti,n s,,rrcn ,,ivS,',ns i,s"tr smn"9
,Irn. in Hcsor,,ancs With ibc iaw whisl f]xss thI
rnfat,,n ~ ~ nnu ~ rcs,.tan' -" ''>'' ''''
' ,rr nv ~. .,.rty ~s, Tn,s xnov,rnox
Suppose az insulated copper rod, whi:h We
We nny call MI "elect.tc n'aln," to be latI down
along onc Of ctr ftreeta, say along the Strand.
Let this rod be connected With one end Of
powerful 7o'tafc oa.tery. good metallic con
Hcction being established between the olMr
end Of tllc battery and the gas-pIpea
under the street. as lonE as
the electric n,aIu continues ,lneonncctcd
with tie Eas-plpcs, the circuit is incomplete,
and no current Will How; but II any part Of
tho main, however distant from tic battery, bo
connected with the nltacent gas-plpes, the cir
cult will be completed, aud the current VIII
N'w Surprising our battery to be at Chnrtny
Cross, md o,,r rod of copper to bv tapped oppo-
site Somerset llousc. brunch wirc can be carried
fro the rod into tllc building, the current pass
ill.,; through which may he subdigtdcd into aiy
number 0l subordinate branches which r-unite
afterwards md rrturn through tho Eas-p1pes to
ttlu l,nliprr Tthc hfn1fh t.,trrtntA mae he ntn-