Evening journal., 1889-01-21
a HELP TO PHYSICIANS.
The Phonc~raph Shown to re Of serv;c
IA RT,i.is.i- No., ,et

Ia Maiiss H,ess ,sia.
Ashon.gi oile zen ycsls Save c.ans,l
since sir Thomas A. Edison star,lel ~,
world by inv enting a machine TIM. s,or.l
up sound and reproduced il az Will IL n
only within tho past few months that this
wonderful invention has been brought 10
such degree Of perfection asmakes it Of pryo
tical utility to the public nt large Som,
time has passed since began 10 investigate
She practicability Of this machine, so as To-
give TO the medical world better and more
certain means Of teaching, recording, repro
ducing and demonstrating the physical signs
or sounds OF the normal as we'll as Of the dis-
eascd condition q the heart and lungs.
At this carly stage Of my experiments
must say that predict great future for it,
and the opening Of a new fiald for invosti-a.
ton 10 physical diagnosis and teaching.
1t isa very extraordinary fuct that, while
tho deepest tone that our cars arc capable OF
recognizing is one containing sixteen viara-
lions second tho phnnograph viii record
ten vibrations or less, and can then raise the
pitch until We hear reproduction from Them
Similarly, vibrations above the highest rate
audible 10 the ear can he recorded on the
phonograph and then reproduced by lower
ing the pitch until we nctually hear therecord
of those inaudible palsations.
From what observations ! have already
practically made, / am satisfied THAT the
photograph has q great future, end has
opened up an entire new field OF investga
ton Ia chat line
The method which I adopted in making
these experimental physical examinations ny
the phonograph was carried out ia tine fol-
lowing manner;
The phonograph was placed on q suitable
table before me; a tube IN the shape Of the
deaf conversation tube was then attached to
the recording cylinder Of the photograph;
tile other end wns placed on that part of the
chest which was "a be explored; then the
monograph was setln motion before placing
the tube In contact with the chest In order
TO register or record upon the wax cylinder
that part of the chest which was intended to
be examined, 10 was found necessary, either
before or directly after examining any part,
20 register by its anatomical name that part
of the chest. This was done by speaking into
the monograph SO az TO be able, In reproduc-
ing, % distinguish those physical sounds
found in one part from the other.
For example, il intend 90 examine the
supracavicular region | speak into the pho
nograph while in motion, before placing the
tube ON the chest, "Sunraclavicular region
tered. l now place the tube on that part Of
the chest and examine slowly and thoroughly.
In this way / continued 90 explore tho entire
heart and lungs. 10 viii be found adynn-
tageous 70 allow tho cylinder TO make a mum
Der Of revolutions before removing tho tube
TO another part III order that more than one
respiratory heart sound might be registered.
This Is also TO be carr,ed out on examining
! the heart sounds
When was finished with my examination
! / returned hack the reproducor. so as TO r.
| peat that which was registered during the
examination. The phonograph was now set
in motion; direct attached stethoscope was
applied 10 my ears from tho phouogmph All
the sounds were heard, in their varied pitch
and tone as they came nlong, with perfect
clearness. The words and sentences that |
had spoken into it, for the purpose Of record
ing tho landmarks, We're all reproduced
With some extra experimenting was able
to apply tho use Of the monograph in such a
manner as to throw the physical sounds,
which had been previously registered upon
one Of these wax cylinders, into the uaiditori
um, and thereby teach directly a larger class
It is further possible TO construct physica
sign cabinet which hasall registered cylinder
representing the different diseases Of thu
lungs and heart When one wishes 60 stud,
any Of the sounds OF the heart or lungs h
can pick out Of his cabinet that cylinde
which has registered upon it such physica
sounds
Various other uses for which the phone
graph is now fully ripe might be mentioned
but am not ready 10 give memoranda O
these. Mount Bleyer, NJ. D., in Medica
/, Record