The times dispatch. [volume] (Richmond, Va.) 1903-1914, 1903-08-30
: ~, c,orro,oondence ., The Times Q

Dispatch)
BOSTON, MASS, Aug. ss'- MI, 40.
STONE stone, lecturer In the eiec'.'ea.
nartment OF the Massa chusetts i''etiss w..
:, ,rerhnolory, who ia well known ~.
ftr,,or,ont inventions In the develo p1''cne
a,',ony distance telephoning. has rceen'-t
~ nroved the value OF years OF "ork ~
voted 10 the commercial aspects u ~" -.
less telegraphy by sending messhsea 49,.
q r,.nhrIdre 10 Lynn, Mass. a dletance =.
about twelve miles. under conoit.ons ~
hayo hi,her,o been deemed Impossible. -on.
,lth,. message, no wireless telegraph hha
bean unnecessarily operated Wtn'''t t ~ ~ ~
miles OF an electric car Inc. OF so's
under conditions at all similar 70 .to'e
Of an ordinary NEUTRALITY-SUSPICIOUS., NJ
Y ever that are absolutely essenliai 70 80. 81
ducing Herta's great discoHe! y hh,,s,,ess
terms OF "a matter-ot-lact, J.. nan nEor, wire
finder the new system. In SNORT, "a,,.
lass telegraphy becomes means q co -
m,inication on land. where all me GNU
lions Of daily lfe-trolley cars, sent
ei is c,trinal disturbances presented by the
S,ires az telegraph and telephone systems rs
already in opera tion-have SO ia t,, ..ia ~
i an mpossiei1l,wy. It's ' Operation is
20, less embarrassed by extran ,ep ns
causes The new system: moreo.vSea' d snnc
vet another important step ~ W. o..i,nI-
ton q c ,naxeHI 'for It not only re-
duces the height Of me in ntIvsd the nrob-
cal proportions but 1t has solvea t arc,t,sIve
lem Of making rs e sen I,s ana receiving sta
i;nns This Is essentially the eapet,,,ues
~ 'ach,evement OF the Technology im T. 30
tinator; what use Will DC i'' au''
mains g } ne hefnre the actual success at
SON. some i I'M ,h Nope operation Of Mr. stone,
anns ratus. Prof. Louis Duncan Meas a.
the eieetrI Imst,t ute OF technology with
+ c.,.i,;, ;neii,ntlon the latest American ~
wantor is himself connected as nsoiIlstinns
on the subjects OF eecttIG ~, =, :, al IN the
and Wlr NJ, st.r ~ examinauon OF the pre-
Urinary laboratory work tnem an t rad''
accomplished. ut has been a 1,e',h the nres-
said Prof: is 4 not possible SUCCESS
snI app o sand and receive selectivo sig,
1als. that is signals which are rec 81 -
by only one station 70 TO-. ne Success Of wire-
S 1.ns' tc,orra phy dependx upon developintt
less e Which s selactive believe t the
the me,h f;as, y %stn naye Which viii
p,n ans ' Jon have erected have shown M
seIectiylty OF about ten per sen, een' de M
have personally Xer, shrdlu shrdlu shrdi
:, o, se'nnt,vitv is quite sufficient tor com,
us, =, n,,rposes; at the same ttne 20
OF the opinion that You. p aese and com
t us. %ne form. viii show an even greater
degree Of selectvity. ,.o,o. te,epra INV
II, seeking to reduce WirGssft he pEoblsm
. wh!s;h Mr. !. st9hr no T. obviously
these days no system o. wlree nractical
g5ap ong e a i could not b operated With
so eit 'ot disturbance by trolley cars. telef
eraphs, or other e enGma Icati e9noN Nor
cnnd on ,a sush system become altogether
dependable sc long as It necessltated th ,e
poles 50 d hsh t Ss snsy
enaa messages that were not confined ex-
ciuslvely 70 the sending and rec rece eI hg
statons and could not :, Pc t oysFne1TI 10 OBJ.
the appSa "a rst o. 81 9't These tcultes MI
Stama has found a method Of isolating
his stations from "a al! ob sHrr the Second he
Sa cal d st to sneak greatly Increased TIE
tr un; efilciency Of small currents
and the same time shortonEa M ~ third
t 8 n1 he has invented apparatus 60
selectlve" that It Transmits 2 m me- ,Ge
that can be neither 4 ssrs nv ants 81 any
Lacking the towering height siaa Of q e the
Marconi masts. and lacx asra als 80 8ahs great
s SassSty q 5es fst
Etone,s tWo stations in the small dsser!
oi7newly- made land between BOSTON anu
Cambridge have attracted comparatively
little attention during the sixteen mohftns
:. In which prepare tions have peen mahtnS
FOR tho first wireless message PetWeh Lynn ~
and Boston, An electric car line pAs,ssSSs
between these stations ana anotnsE ~, WILL ~.
in seventy-nve feet of the hase Of th va IL "
ceiving wire at Lynn, me ta ainad ~ @
stations separated by about tn.rI q nn 4
with means for developing. radlatlng an as
receiving eleetro-magnetiG sig19l waves ths
Il operator It was found IN prac tlce. 20
4 had been previously developed N theory
by Laboratory experiment, that slEnai
waves differing In frequency by less tnai.
ten per cent, could be easily picked out at
ste one or The other Of the reeelyng ap.
paratuses by a proper adjustment Of the
Receiving circuits, In other words, as
the different sound waves, produced by
corresponding different numbers OF yl-
brations Of the tuning lork, produce
Principle Of MI, Stones seleotye appar.
music. If YOU Imagine three boys stand
s 81 them s''s eaapabls 81 distinsu!ahins GER
tain note IN the vocal scale that the other
cannot distinguish. the two boys are IN
lions Of the Stone wireless system II
you reduced that note to terms Of the
Morse alpha bet the two boys would have
. met hod of Communication Of Which the
third would be ignorant; And It Is by
scienti flcnlly selecting the wave Length