Evening star., 1922-07-01

| iiioiS Sd5SI lHdH ever 70 StFihc d DlO"
at you and yours" put in Craig coolly.
| No, let US get this thing straight. l
| didn't think it was as serious as this.
| put I'm prepared to meet any emer-
| gency."H
But, man." shouted Brixton, "you
don't suppose anything in the world
| counts beside her, do you?"
Exactly the point" urged Craig.
Save her and capture them-both at
| once"
| How can your" fumed Brixton "If
you attempt to telephone from here
that fellow Janeff will overhear and
| give warning"
Regardless of whether Janen was
| listening or not, Kennedy was eagerly
| telephoning to the Woodrock central
down in the village. He was using the
transmitter and receiver that Were
connected with the iron tube which
he had connected to the two regular
house lines.
Have the ferry held at any COST"
! he was ordering. Don't let the next
| boat go out until Mr.. Brixton gets
/ there, under any circumstances. Now,
| put that to them straight, central
| You know Mr.. Brixton has just a lit
| tie bit of influence around here, and
somebody's head will drop if they let
that boat go before he gets there"
Humph"" calculated Brixton. Much
good that will do. Why, 1 suppose our
! friend Janeff down in the storeroom
knows it all now. Come on, let's grab
him..
Nevertheless, there was no sound
from the detectaphone which would
! indicate that he had overheard and
was spreading the alarm. He was there
yet. for we could hear him clear his
, throat once or twice.
No" replied Kennedy calmly. "he
knows nothing about it, / didn't use
against the experts who have brought
this situation about. That message
you heard me send went out over
what we call the phantom circuit. -"
The phantom circuit?" repeat
ed Rrixton. chaf1ng at the delay.
| Yes, it seems fantastic at first. l
suppose" pursued Kennedy calmly,
| but. after all, it is in accordance with
the laws of electricity. It's no use
fretting and fuming. Mr.. Brixton. If
Janeff can wait We'll have to do
so, too. Suppose we should start and
this kronSki should change his plans
at the last minute? How would we
find out? by telepathy? Believe me. sir.
it is better to wait here a minute and
trust to the phantom circuit than to
mere chance
But suppose he should cut the line"
| put in.
kennedy smiled Il have provided
! for that, Walter. in the way l INSTALL
| ed the thing. l took good care that we
could not be cut off that way. We
| can hear every thing ourselves. but
we cannot be overheard. He knows
| nothing. You see, / took advantage
| of the fact that additional telephones or
| so-callsd phantom lines can be superpos-
, ed on existing physical lines. 1t is
, possible to obtain a third circuit from
| two similar metallic circuits by using
| for each side of this third circuit the
| two wires of each of the other cir
cults in multiple. All three circuits
are independent. too.
| The third telephone current en-
| terS the wires of the first circuit, 8
! it were, and returns along the wires
of the second circuit. There are sew
| eral ways of doing it. One is to use
| retardation or choke coils bridged
across the two metallic circuits at
| both ends, with taps taken from the
| middle points of each. But the more
| desirable method is the one you saw
! me install this afternoon. l intro
| duced repea ting coils into the cir
| cults at both ends. Technically, the
! third circuit is then taken off from
| the midponts of the secondaries or
llne wlndings of these repeating coils.
! THE current on long distance
| line is alternating in character. and
! 1t passes readily through a repeating
coil. The only effect it has on the
transmission is slightly reducing the
| volume. The current passes into re-
| peating coil, then divides and passes
i through the two line wires At the
| other end the halves balance, so to
| speak. Thus. currents passing over
! phantom circuit don't set up cur
/ rents in the terminal apparatus of
! the side circuits. Consequently, Il
/ conversation carried on over the
phantom circuit will not be heard in
| either side circuit. nor does a con-
versaton on one side circuit affect
the phantom. We could all talk at
| once without interfering with each
| other"
| AT any other time 1 should be
| more than interested" remarked
! Brixton. grimly, curbing his impa-
! tience to be doing something.
Il appreciate that. sir" rejoined
Kennedy. "Ah, here it is! I have the
central down in the village. Yes?
They will hold the boat for US?
| train is five minutes late? Yes
i what? Count Wachtmann's car is
| there? oh, yes, the train is just pull
/ ing in. 1 see. Miss Brixton has en-
tered fsi N his car car alone. What's -hato
ms chauneur has started the car
| is coming down the p1atform?"
Instantly Kennedy was on his fcer.
He was dashing up the corridor and
| the stairs from the den and down into
! We burst into the place. 1t was
empty. Janeff had cut the wires and
J fled. There was not moment to lose :
Craig hastily made sure that he had
not discovered or injured the phantom
circuit.
Call the fastest car you have in
Kennedy. 'HelIo, hello, central! Get
! the lodge at the Brixton estate Tell
them If they see the Engineer Janeff
| going out to stop him. Alarm the
watchman and have the dogs ready.
| Catch him at any cost, dead or alive"
! A moment later Brixton's car raced
around, and we piled in and were off
| like a whirlwind. Already we could
see lights moving about and hear the
baying of dogs. Personally,
wouldn't have given much for Janeff's
| chances of escape.
! AS We turned the bend in the road
just before we reached the ferry we
almost ran into two cars standing
| before the ferry house. 1t looked as
| though one had run squarely in front
| of the other and blocked it off. In
the slip the ferryboat was still steam
ling and waiting.
I, Beside the wrecked car a man was
| another man was quieting girl
whom he was leading to the waiting
room of the ferry
! Brixton, weak though he was from
| his illness, leaped out of the car al
most before we stopped and caught
| the girl in his arms.
! "Father! she exclaimed, clinging to
| him.
whats this?" he demanded, stern
! ly. eyeing the man. 1t was Wacht-
mann himself.
Conrad saved me from that chauf-
feur of his" explained Miss Brixton
| II met him on the train and we were
[ going to ride up to the house to-
gether. But before Conrad could get