Rock Island Argus. (Rock Island, Ill.) 1893-1920, 1911-09-22

Inc EduldCc0 Ii Oil
from a center it was only necessary
70 place two OF my instruments a long
distance apart and note their indica-
tons / can make this clearer with
the aid Of a little diagram-thus:
Suppose that @ represents the CEN
ter from which the waves radiate and
that one of my needles is placed at
A and another at B. Then, by OBJ
serving the direction and the inclina-
ton TO one another Of the radiai lines
Ca and CD and the direction OF
the dotted line joining them and know
ing the distance between A and B, you
have all the elements needed for SIM
pie trigonometrical calculation which
will give the location OF the point @.
This, however, applies only to the
case where the waves are sent out
"undirected" on all sides. With ''di-
rected' waves. which are now almost
universally employed as they were at
the time of which ! am writing.
variation of the process is required
1t is then necessary that the waves
shall be sent either simultaneously or
at an interval from the point G sepa-
Fately to A and B. This being done.
the result is the same as before, the
location Of G being determined
In the latter case a single instrument
will suffice. being used first ut a and
chen at 2.
knew that the last described meth
cd would have TO be employed. since.
as ] have already explained. Payton
was sending directed" messages TO
Mr.. Grayman. although the latrer's re-
plies were necessarily "undirected."
because Payton would not designate
his location. and the waves had to be
sent our on all sides in order TO find
MIN. The Only problem for US | saw
would be 20 induce Payton TO commu-
nicate in succession from the same
point with two widely separated sta
tons
As soon as he should have done that
I knew that could spot him
Having thought this out and furnish
ed up my apparatus TO make sure that
IL was in good working order, l re-
turned with II to Mr.. Grantham's Of
fee. The secretary was delighted with
my explanation of the device.
We've got himr' he exclaimed glee-
fully. LAS sure as there is a Great
Chief Justice in the heavens we've got
him. and we'll give him his deserts.
And, young man. your fortune is made.
Do you know what Mr.. Grayman will
do TO reward you Tor restoring his
daughter" .......-
No. sir; / haven't thought about
that"
We'll. don't know. either" he re-
piled. With QuizzlcaI smile. but l
have thought about il, and l know
what I'd do. anyhow"
Then ne looked at me for a moment,
laughing good humoredly. But. sud
denly becoming serious. Wen take
the first train for New York." be said
There is no time TO be lost Payton
will communicate tomorrow. and we
IN readiness" Ed,
The next morning Mr.. Grantham and
1 went together In an auto from our |
hotel. where we had arrived in the
middle Of the night, TO Mr.. Grayman's !
Office
This is Lieutenant Allan" said Mr.. !
Grantham. presenting me very courte-
ausly. II have already told you about |
him and my expectations of him. He |
is not going to fail US. He has brought |
along little apparatus which. fancy. |
viii do the business for Mr.. Alfonso |
Payton. Lieutenant Allan, please show |
Mr.. Grayman your machine and tell ,
him how it works"
The great Millionaire was as delight
ed with the explanation as the secre-
tary had been
But how" he asked. after a mo-
ment's reflection. ARE we going to in
duce Payton to send two messages to
different points? And how do we
know that he will send them from his
hiding placer He may communicate
from his aero"
II have worked that all out. Gray
man." replied the secretary. In the
first place. as to his communicating
from his 1odge'-for / Judge by your
letter that that is what be
calls his lair-I believe that there is
very little question. He will want TO
continue to entertain her and TO lull
Der suspicious; and so, having. prob
ably. no more important business than
this. he will remain there You can
make sure by asking for news OF your
daughter.
Then. as for inducing him to send
TWO messages, that viii be easy. Lieu
tenant Allan tells me that he wishes to
select place for the second communi-
,ation at n considerable distance from
New York. IN order to be sure Of hav-
ng a manageable angle Assuming
hat Payton's place is somewhere in
he Allegheny range. or the Blue Ridge
OF course. we cannot bank
much on the indication of the post
marks. but IL Is not likely 10 be much
arther away-Bunalo would probably =
erve our turn.
'AIl that you have TO do. then. VTflI
'e 10 interrupt Payton after he has
one far enough IN his communica don /
oday 10 enable Allan TO determine the
direction OF the waves ana tell him /;
hat a sudden imperative call has sum- {