New-York tribune., 1901-12-15


gradually improved both his methods and his rec
ords the distance traversed by his etherc signals
being increased successfully from fourteen and a
half miles. between Alum Bay and BournemOuth.
to eighteen miles (AIum Bay and Pooleb. and thir-
ty-two miles, obtained between TWO stations erected
at the instance of the French Government on
Dover Cliff close the South Foreland lighthouse.
and at Wimereux. near Boulogne- In addition 70
this Mr.. Marccni made successful experiments IN
carrying on signals between ships and the shore.
q permanent installation having been at work for
some time between the South Foreland station and
one of the Goodwin hghtships-
In September 1899 the young Italian gave an
exhibition of his wireless signalling Dover Town
Hall at which period asserted his ability to
fash messages a distance OF eighty miles wit
ing of this exhibition in Dover the London CORE
spondent Of The Tribune said at the time;
Certainly there is no marvel Of modern science
more Wondeff4 The 'nIm DoveT Town Hal The key
clicks and spark follows spark. and over the water
T 1g E shffte from traHsmitter to receiver and in
d minutes the metal particles IN tEe tlIy JIos
taps the glass intermlttertly and the mixer records
in dots and dashes the answer T5Gn mas ia TtfIe
less miracle of science THAT Is Wltnesed %
and in is hardly necessary conjecture how rlr
the wonder will grow in future and wnetns1 ,t1l t1e
young enthusiast who four years ago was cappllSS
poles with tin in his fathers fields, Will ENG
by signalling across the Atlantic without Wls scfrt %
syntony in tuning his aerial instruments.
Another writer describing these experiments in
England gave these details:
An important feature Of the MaEconi system is sI a
paratus and a similar one near the receiver With
%u ans as with it At Bournemouth and Alum Bay
the pole up which the wire was led was 10 III 1eeC @e
high at first later IL was found feasDle 20 r.
fuce the height to 80 feet. The wire on the Toyal
yacht t. ran q up up the & fuPne sI oadin G69 ightshp @
tafns wire at height Of " feet on rl-Sf iTT
the NE lshtshP is only about 50 feet high But
for the Bouogne service pole lo ieet & aiSn u y r s
ployed The elevation to which the Z Wlre Is 80 ga, ne
ried bears definite relation 10 the dlSldIce 70 49, %
covered, although the latter Is also GePenGgT rsf
If this be powerful enough to compel a spark spark 20
N 7SP transmit ertzsn thirty miles or
In the same year signor Marconi came to Amer
lea 70 give demonstrations OF his discovery before
oeIcers of the United States Army and Navy. and
incidentally to illustrate its workings at the m
ternationaI yacht races Of that year In an inter
view the inventor at that time said;
Messages have been flashed eighty miles: but do
Ioessasss car be sent The ar<perfnnents have
nrGved that the Curvature of the earth Is overcome
miles apart the curvature which is large has been
was sent was seventy feet high
Since that year Marconi has steadily improved
, his system and and more increased its prac-
field of usefulness chiefly in the direction OF
communication between passing SHIPS at sea anu
between the shore and incoming and departing YES
sells Regular snip reporting stations nave Deeil
recently established the Irish Coast. and at Nan
tucket the time OF isolation from the outside
world experienced by the great transatlantic steam
ships has been shortened nearly day. comnunt-
cations passfng between the vessels and the Mar
conf stations long time before the steamers reach
their destinations
Marconis title to the glory of originating
teIesraphy has been allowed to pass Unchal-
Ienged. Professor Amos 2 DoIbear- Of Tufts Col
lese, laid claim to the honor Of discovery ana
sought to enjoin Narconi when the latter arrived
here first from reporting the yacht races The
young Italians friends do not deny that at least
dozen were working away at the same general
problem before he attacked it. but they said the
merit of developing it TO practical uses IS his
Preece Lodge, Silvanus P. Thompson and others
in England had been investigating and experiment
ing with wireless telegraphy for a least dozen
years and DoIbear and Tesla were by no means
the only Americans who had studied the subject
But the fact remains that for reason an
other none of these men have brought the science
such a triumphant result as Marconi- Mr. Preece
thought he doing we'll when he sent a message
across gap of two miles.
The only really original part of Marconi's ap-
paratus is the magnetic Taper attached To the
Branly coherer. which he receiving in
strunent- All the rest of his system adapta-
tion. and in OF this adaptation he
pretty close ideas suggested by others IN its
earlier form his apparatus constructed that
the Hertzian waves produced at the transmitting
station apparently had only the ether as their
route and medium of travel But after the ground
wire added both a the sending and receiving
stations additional path afforded. and
Marconi then discovered much to his delight that
the efficiency of his mechanism was enhanced So.
too, with the vertical wire which is now such q
conspicuous feature of his equipment Tesla had
suggested such arrangement years before it
In a recent number of ''McC1ure's Magazine this
description is given by one who visited the station
Alum Bay. Isle of Wight:
Here. overhanging the bay. is the Needles Hotel.
and beside II lifts one Of MI M4rG9nis tai maSJs;
and gale. From the peak hangs down line OF
sending-room. where We may now see enacted this
mystery of talking through the ether. There are
air Of doing something that is altogether simple
One of them stands al table with some lnstru-
and down He is saying something TO the Poole
'Brripp- p-brripp-brripp-brrrr
Brripp-brripp ripp'-brrrrrr-
brrrrrr-brTiPp- BrrtppIbrTriRP5 p-5 TiRP...,o,
II fbe MoTss code workng@ordinary dots and
dashes which can be made into letters and worqss W &
key blush sparks jump inch between the two
brass knobs of the induction coil. the same kind Of
in experiments with the R6nsgen rays For one
comes a stream of sparks One knob of the induc-
connected with the earth the other with
Indicates certain osciIlating impulse imp Is from the
electrical battery that actuates the coil; each one
and from the wire through space by oscillations of
the ether Io1pd fbe sarth in second That IS all
there is in the sending of these Marcani messages
II suppose what you send is radiated in all di-
rections?
..Then any one within eighteen mile range
HiFt iff tbey hsd the proper kind of receiver And
he smiled cOmplacently. which drew further anss-
b TeIay and the Taper and the twin silver plugs
in the neat vacuum tube. all essential parts oI
nmIsations in the ether The tube made OF glass.