Daily globe. [volume] (St. Paul, Minn.) 1878-1884, 1881-08-02
Locotinl the Bullet.
PROF. BELLS EXPERIMENT.


WASHINGTON, Aug. 1.-The experiments
This morning were repeated, and were made
by Professors Bell aud Tainter Independently,
so as to guard as much as possible, against
errors arising from faulty perception of a
single individual, or from one PERSONS mis-
take in Judgment as to the comparative in
tensity of sounds In every instance, how
ever, when the small disks attached to the
machine were placed in such position on the
PATIENTS body to indicate the location of the
black and blue spot which appeared on the
lower right side of the abdomen, soon after the
President was shot, the listener at the micro
1,houe said that he believed he heard the evil
tences of disturbance. 1t made no difference
whether the experimenter could see the disks
ar not Whenever they were placed in that po
sition he became instantly aware of the fact
and announced it. The experiments were
varied and continued until all were con-
WINGED
THAT THE BULLET HAD BEEN FOUND,
or at least located on straight line running
through the body from front to back, Just
above the groin on the right side. 1t was not
possible to ascertain, with any degree of cer-
tlinty, the depth at which the ball lies i'm
bedded on this imaginary line, but as the front
wall of the abdomen at this point is about
two and one-half inches in thickness, the ball
must be within that distance of the surface.
These results must confirm the original dag
nosis of the case made by the surgeons
soon after the President received his injury,
and that fact is as gratifying to them as the
Camplete success of the induction balance is
TO Profs. Bell and Taintor. This is the first
instance in which an imbedded bullet has been
ACCURATELY AND DEFINITELY LOCATED
without probing, and by purely scientific
,nethods There is no intention on the spart
nf the surgeons to perform an operation for
the removal of the ball at present. So long
as it gives no trouble it will be allowed to re-
main in its present position. The question of
the disposition to be finally made of 1t will be
considered when the President shall have re-
covered his strength
THE INSTRUMENT.
Professor Bell has been working night and
day to perfect his apparatus. As heretofore
used it consisted of two circular primary coils
of insulated copper, three inches in diameter
and half an inch in thickness, the one being
constructed of No. 10 wire and containing
between seven and eight ohms of resistance,
The primary coil, and the other of twenty
eight or thirty wires giving more than eighty
<,hms of resistance, forming the secondary
coil, and united in separate metallic circuits.
sn the circuit with the former there is
placed an
ELECTRICAL BATTERY AND A SPRING vIBRA-
TOR.
The latter is so adjusted as to make a series of
breaks in the circuit, sending 100 or more
electric pulses over the circuit and around The
primary coil of wire per second A hand
Telephone only is placed in the circuit with
The secondary coil, and the batteries being
connected and the vibrator set in motion, the
secondary coil is placed SO as to cover the
primary, and the operator having the tele-
phone at his ears, hears the pulsations of the
primary current sent through the vibrator
with each motion of its spring, an induced
current being produced in the secondary coil
by its contingency with the primary. PROBES
sor Bell increased the
sENsITIvENEss OF THE APPARATUS
by using only one coil in each circuit, and by
adding to the primary circuit condenser
similar in form to that used for like pur-
nose in connection with the Rumk orf circuit,
and with certain systems of telegraphy. This
proved to be the act which crowned the ef-
forts of the eXperimentors with success.
Prof. Bells instrument to-day plainly lndi-
Gated the presence of the ball where DR.. Bliss
naQ lOCdutu lb, IiSuI ueucdeu 1uo uioOOIoiCu
spot that showed itself on the right side OF
the abdomen. week ago an experiment was
made in the present case, the instrument used
being Hughes balance, with detective range
of two inches. The Presidents
BACK WAS EXPLORED
for some time without any results, but when
the detector was placed over the point of the
abdomen where discolored protuberance
made its appearance Immediately after the
wound occurred, indistinct effects were no.
ticed. This was confrmatory, SO far as il
went, of the theory of the attending phys
icians in regard to the place where the bullet
is imbedded but was not sufficiently
definite to warrant feeling of certainty. Dr.
Agnew was present when the experiment was
made, but Dr. Hamilton was not, when the
experiment was made Saturday night, and he
was desirous of witnessing repetition of the
experiment. Prof. Bell therefore went to the
white house for that purpose. When, how
ever, they made known the greatly enhanced
result of later experiments, it was decided tc
postpone further tests upon the President un-
ill this morning, when the position of The
bullet was made definitely known. The ex
pertinent took place at $50 a. IN.
CONTINUED PROGRESS.
EXECUTIVE MANSION, Aug. l, z p. M
The President remained with his head ant
A