The Savannah morning news. (Savannah, Ga.) 1900-current, 1900-10-14

that N Marconi lets the world know that
he has tclegraphed sixty miles win
four-fOo cylinder. he has done more than
that for Marconi Is a man who never lets
the public catch quite up to him.
As long ago as last January Marconi be-
gan 20 work on the cylinder plan. The OK
perlments begun In his laboratory at
Poole Harbor nrst from room TO room with
receivers only one-onc thousandth part as
sensitive as the one be used for regular
work between France ana England: then
he took his apparatus out OF doors and
for several weeks along the beach ne
went through hundreds OF experiments
with the utmost patience. gradually APP
proximatlng the proper relation between
receiver and transmitter until perfect
messages were finally sent across 10 the
Isle OF wight. eighteen miles away. lie
did not tell outsiders OF this success, be
cause he felt that he must frst perfect
his apparatus and plans. and demonstrate
conclusively that the new system was bet
ter than the old.
The Changed Method.
In essential arrangement and working.
the cylinders plan IS not greatly different
from that OF the aerial wire The trans
hitting Instruments are practically the
same. battery. induction coil. earth
wire, &C., the only change In this part OF
the apparatus being the introduction Of
resistance coils where needed and an ar
rangement for sending tuned messages
(which may be explained later. But on
TN. outside OF the room which contains
these. nothing Is 10 be seen. The cylinder
stands close at hand. upon table. u may
be. insulated from any earth connection
except through the transmitting instru-
ments when in action. The receiving sta
ton presents the same appearance IN
deed the stations are all alike, being mt
ted 20 send ana receive messages IN che
same room When n message r. being
received. the wire leading 20 tho cylinder
e disconnected from the transmitter and
attached 10 the receiver. This arrangement
a. used. OF course. only when single IN
stolis.ion - IN operation with the APP
naratus FOR dlffcrentiaung between mes
saees which Marconi has worked and a
number OF installations may be working
topother tn the same room or building
and then n Is possible 10 send and receive
lust as many different sets Of messages
a. there are instruments. differing In ca
pacity. But this Is further step. ana.
lust now Marcon Is busy with the per
lection OF the cylinder plan on one IN
stallation The duplex and multipleN sys-
TENS are as sure TO come as they have
IN the case OF ordinary wire ana cable
systems.
Scientific Problems.
Just how the messages are sent u more
OF a puzzle now than ever. Formerly no
one doubted the statement that ether
caves constituted the element OF com
r,unieation. Now this is being questioned
why not earth eurreutsf suggest some:
ara tho inquiry is not easily answered
The production OF these high tension I'M
pulses might easily disturb the elecire
equilibrium OF the earth. q would seem.
ara the very sensitive receiver IN electro
harmony. so 20 speak. with the transmit
ter Would record this disturbance JUST o.
Il occurs-in long or short Impulses or 20
dots ard dashes as they appear on ~
recording instrument. or course, this