The Seattle post-intelligencer. [volume] (Seattle, Wash. Terr. [Wash.]) 1888-1914, 1896-03-11
TESLA ON THE XRAYS
The Great Inventor Has Made
Wonderful Photographic
DOESN'T UNDERSTAND n ut.
Hayv Sent Throush the Braan Mako
One Drowsy and the Time
Passes Rapidly.

New York. March ia-Ths Electrical Re-
ton from NIkoIa Tesla, describing for the
first time his very interesting experiments
In photography. The scientific world has
been awaiting an expression of opinion
from Mr.. Tesla, who 10 known to have be-
gun his experiments within an hour after
the news OF Prof. Roentgen's discovery
was cabled to this country. In connection
with Dir. Teslas communication the Elec-
trfcal Review prints two remarkable radio
graphs. One of these shows the right
shoulder OF q man taken through his cloth
ing. Q plate OF glass fhree-sixteenths of
an inch thick and two inches Of wood
This photograph. which was made At q dis
lance of four feet from the source OF the
rays. shows the ribs, shoulder bones and
bones Of the upper arm The other radio
graph shows copper wire bent TO form
the word Roentgen. and was made At
distance OF eleven feet from the wooden
slide covering the sensitized plate.
sfr. Tesla also states that the rarefac-
ton Of the Crookes tubes in these exper-
iments may be increased BY electrical
means to any degree desirable. far beyond
that obtainable by mechanical appliances
This method he describes
In regard to the nature OF the K rays
he says: 81 am getting more and more
convinced that we have 10 deal with
stream OF material particles. which strike
the sensitive plate with great velocity.
Taking as a basis the estimate OF Lord
Kelvin on the speed Of projected particles
In Crookes bulb, We arrive easily by the
employment OF very high potentiais 20
speeds OF as much as hundred kilofneters
a second Now, again. the old question
arises; Are the particles from the cleo
trode or from the charged surface sensr-
ally, Including the case OF an external
eiectrode, projected through the glass or
aluminium walls, or do they merely nit
the inner surface and cause particles from
the outside OF the wall to ny on. acting N
a purely mechanical way. as when a row
of ivory balls Is struck SO far most Of the
phenomena Indicate that thay are projected
through the walls OF the bulb. OF whatever
material IL may be. and / am seeking for
still more conclusive evidence In this d.
rection. Il is now demonstrated beyond
any doubt that small metallic objects CT
bony or chaIky deposits can be infaa'oiy
detected in any part of the body
Tesla has also secured photographs show
ing the bony structure OF birds and rab-
bits, even to the hollow OF the bones. he
has secured a Photograph Of a rabbit, after
an hours exposure, in which not only ev-
cry detail of the skeleton Is visible. but
also clear outline Of the abdominal CAVITY
and the lungs and the fur are shown Ra-
diographs OF large birds show the Ieathers
distinctly. In another instance an ex-
posure of forty minutes gave photographs
Of the human SKULL showing clearly not
only the outline. but the cavity OF the eye,
chin. cheek, nasal bones. the lower Jaw
and connections to the upper one. the YER
tahral column and connections to the skull,
the flesh and even the hair.
Mr.. Tesla continues his communication
In the following interesting words: by
exposing the head to n powerful radiation
strange effects have been noted. For IN
stance find there is tendency to sleep.
and the time seems TO pass away quickly.
There is a general soothing effect. and
have felt a sensation of warmth In the
upper part OF the head. An assistant In
dependently confirmed the tendency 10
sleep and a quick lapse of time. Should
these remarkable effects be verified by
men with n keener sense OF observation.
shall stu more firmly believe In the exist
ence of material streams penetrating the
vault. Thus II may be possible by these
strange appliances 10 project a suitable
chemical into any part OF the body"