The Middleburgh post. [volume] (Middleburgh, Snyder Co., Pa.) 1883-1916, 1896-02-13
TIE WONDERS OF PHOTOGRAPHY.
LOCATED THE BULLET.
Professor Roentgen's Discovery Tested in a
Practical Manner.

Medical men in Montreal have been for
OF Irofessor Cox, of McGill University, with
DIR. Boentgen's method OF "invisiblc" pho
tog arhy by the cathode ray.
On Christmas day bullet was fred into
the ralf OF the left leg OF a young man nam
ed Cunning. The injured youth was taken to
the Montreal General Hospital, whore ef-
forts were made to locate the bullet by prob
ing, hut without success. The wound heal
ed ever and two weeks after the accident
you1g Cunning left the hospital. All went
well until last week, when the wound be-
cane troublesome from the fact that the bull
let itill remained In the leg.
II was decided TO try TO locate the bullet
with the assistance Of Dr. Roentgcn's discov-
cry The young man was taken 10 one Of
the experimenting laboratories in the Physics
building at McGill University where the ex-
pertinent was 10 take place.
When he had taken his seat n cnmern-
holder containing n stanley sensitizcd plate
was placed against heavy block ~ wood
u at one side OF the leg. the latter being held in
steady position by means of bnndnges and
towels
When all was in readiness the electric cur
rent was turned on. The light Immediately
begun TO flare and flicker. hut after short
interval became quite steady. Al the end of
40 minutes the current was cut of. the
bandagCs loosoncd and the plate taken Co the
dark room for developing. After the lapse
Of 10 minutes Prof Cox rcappcared. He
said he had every rtasOn 20 feel grati0pl 4t
the result "The bones in the calf " the leg.
said he care plainly disccruible in the plato
and In addition there IL solid substance
there which am convinced Is the bullet"
The doctors in attendance and the patient
himself were likewise pleased with the result
of the experiment. subsequently, the latter
tNu a. 20 sf,., L. q a
whore an operation will be- performed IA soon
as n print can be obtained from the plate
Thomas A. Edison, his laboratory and his
assistants and employees at Llcwellyn Park.
near Orange, y. j., are these days devoted 90
tathoming the mysteries of Prof Rocntgcn's
rays. The famous inventor himself works
from morning until morning, working mt
nothing and striking at nothing but the now
form OF light
An experiment Of interest was that Of de-
ternining the relative resistance Of certain
metals and substances. Narrow strips. one
each Of hard rubber. celuloid. steel. cia,s.
zinc, aluminium and lend. were fastened pcr.
pendicularly about half an inch apart on
piece Of cardboard. The card wns fastened
to the shutter OF slide, within which was
sensitive plate. The strips were then cX-
posed for eight minutes 20 the rays.
The negative obtained showed that the
steel was iiacticaliy impenctrablc: lead and
alumnum offered little or no resistance To-
the light; hard rubber, celluloid and zinn
succumbed In like measure. and glass gave
fair resistance. II IL known that the glass
OF the tubes retains 10 per cent. OF the rays,
and II has been suggested that n window oi
aluminium be placed in the tube opposite the
cathode disc, allowing "a frecr exit for the
strange light
Mr.. Edison purposes within n dny or two
to attempt 20 photograph the bony forma-
tion Of human head and incidentally. TO
see II IT Is possible 10 eet shadow OF the
brain.
Whether the brain will resist the rays and
prevent it, production In sEadowgraph form
is not known. What obstruction will be of
fered 10y the skull Is also undetermined. al
though the theory, apparently sustained by
tR e,,,lsTi9let 4, e thpt9Sge wiz -. -!
the lays to penetrdt II