Rocky Ford enterprise., 1898-02-03

bedded in the brain may now be re-
moved without jeopardizing the life OF
the patient.
The surgeons were not long In dis
covering the fact that 1t was impru-
dent to exact too much from these
rays. They did not always indicate
the precise location of these foreign
substances. and the operator some-
times risked the patients life by de-
pending too completely on the insufh-
cient indication given by the N-rays.
But now young man. M. Contremoul-
ins, of the Laboratory of Micro-Pho-
Biography, under the direction OF NJ.
Kenny, member of the Faculty OF
Medicine, in Paris. has come to the
fore and quieted the fears of scientists
and surgeons by inventing an apparat-
us called "le chercheur de projectiles."
or "searcher for projectiles," which he
claims is capable of revealing with abb
solute precision the exact location OF
ball in the brain. Experiments have
resulted successfully.
The principle of the method is as
follows: With the aid of two radio
graphic proofs, obtained at different
times. of a head, inside Of which Is
seen ball, the center of this ball Is
determined by a geometrical construc-
tlon. and by its relation to three fixed
points or guiding marks traced on the
face Of the wounded man.
Then by means of small movable
arms jutting outward. the ends Of
which come together. the relative po-
sItion of the three fixed points and the
ball are determined. The four ex-
tremities Of these movable arms are
then attached to compass. This
compass. thus set. is placed upon the
head of the patient and adjusted to
the three guide marks on the patients
face; the extremities Of the fourth arm.
II the head has been perforated. will
coincide exactly with the center of the
ball. It Is then only necessary for the
purpose of extraction to follow the d.
rection indicated by the fourth arm
and to penetrate to the depth indicated
by the length Of this arm.
To obtain two photographic proofs
which will permit OF the exact locating
of the center of the ball calls for the
absolute rest OF the Crookes tubes In
connection with the sensitive plates.
With this end in view. two small. thin
pieces of wood are sealed In plaster
and placed on the upper part Of the
patients head, and to these is screwed
a metal plate.
This plate supports on one side Of
the head a shutter, in which Is sue
cessively disposed two Photographic
plates, and on the other side two i'm
proved Crookes tubes. Joined in such
a manner as to allow them to be moved
in any desired position.
Besides, this metal plate has on its
outer surface three pointed arms.
whose extremities are placed on the
three guide marks on the patients
face; these marks are, generally, one
on the forehead and two on the cheeks.
A Photographic plate Is slid into the
shutter and is worked by sending
current from the very powerful Rhum-
koroff coil, giving 14-inch spark.
through one Of the Crookes tubes.
At the end of a quarter Of an hour
a radiograph is obtained. After this
plate is developed, the shadow OF the
ball will be distinctly seen in the in
terror OF the brain. The operation is
renewed by means Of second plate
and a second Crookes tube. In this
way two pictures OF the same ball are
obtained, occupying different positions.
for the reason that the luminous foci
of the two Crookes tubes occupy dif-
ferent positions In relation to the ball
and the shutter enclosing the plates.
The metal plate is then removed
from the patients head without dis
turbing the different parts of the ap-
paratus. II we now prolong the foci
of each of the Cookies tubes. and the
center of the shadow of the ball on the
corresponding radiograph plates by
means of threads, we reconstruct the
path of the luminous rays. The point
at which these threads cross is the
point at which the luminous rays had
but a moment before met. This then
Eta' 81