The herald., 1896-12-06

Already, while on the border land only
OF the development of This discovery
there is no doubt II has been OF great
value to the physician In making Jr
confirming a diagnosis. Already stone
i'll the bladder, abdominal tumors, the.
condition of diseased lungs, have been
made out and studied with their aid
Already they have proved of great value
TO the surgeon in clearing up the doubt
OF whether he had fracture or disloca-
tion near or within the ligaments of Z
JOINT Already 1t enables him to ex-
anime with the eye broken bone and
to see it's condition. When the bone is
set ne may actually look at 1t and see 4
the bones are in proper position, and this
with the bandages applied
Usually the sensation of prickling OF
OF heat is felt when ones hand is being
photographed; and not without reason,
as energy is being expended by the rays
passing through. AS / have said the
rays are useful in locating foreign
bodies in the body. They are useful
tions.
There is nothing in the effects known
to be due to these rays, inconsistent
with their being one of the many varie-
ties OF light; in fact Becquerell has late
ly discovered that certain salts Of
uranium, after being exposed to sun
light, emit radiations which, like X-rays,
pass through solid bodies and AFFECT
Photographic plates; these new radid-
tions we think to be light, as they are
refracted and polarized. 1t may be the
link between X-rays and ordinary light.
Prof. Lynde has kindly consented to
manipulate the lantern while show you
on the screen some examples of photo
graphs by X-rays.
In conclusion I wish you to remember
luminescence is but a form of light; and
that down to the time of the discovery
of the X-rays all are agreed that light
was due to transverse vibrations Of
ether. That with the discovery of the
X-rays the scientists have become d.
vided into two schools, one holding TO
the theory of transverse vibrations, the
other to a belief that the X-rays are
caused by the emission of electrified
particles.
The controversy RACES about these
points, with the probability of success
leaning toward the former, in view Of
Becquerells experiments with the salts
of uranium and the fact that the X-rays
photographs have been taken with the
light of a fire fly.
Among the X-ray photographs thrown
upon the screen were mems and women's
hands, wrists, elbow joints, ankles,
frog showing a broken leg, chickens
foot. pigeon ten days old, womans
hand with needle in the flesh, ds-
IOII1leu manu. HluIlIly manu-, Hldn
broken finger badly set a baby's back
showing the vertebrae clearly outlined,
while many inanimate objects were
shown inside of boxes, purses, etc. DR..
Sefton's hand, which had been photo
graphed in the presence of the audience
was also exhibited. A splendid negative
was obtained, although 1t did not show
up we'll on the screen owing to the ne
cessity of reducing the size for the Ian
tern.
At the close of the lecture DR.. Germ
moved vote of thanks to Mr.. Case for
his interesting address, and President
Parker called for a rising vote on the
question. There was general uprising
and the large audience filed out of the
room with unanimous expressions Of
haAng been greatly edited by the lee
ture, the experiments and the stereop-
tlcon.