Pittsburg dispatch. [volume] (Pittsburg [Pa.]) 1880-1923, 1892-02-14

| " Anc the most surprising result is tina
the appearance of relief, of solidity. il
united to that of continuous movement
through the single eye-piece all the effect o
stereoscope comes to the eye. In thu
apparatus now being completed at Mr.
Edlson's laboratory a series of views from
MS blacksmith shop is presented. The thre'
workmen are seen successively striking thu
bar Of red-hot iron, and at proper intervals
sssuaging their thirst. In his first mode
Mr.. Edison took pictures half an Incl
square, in the next he essayed dimensions ar
inch square, and found his difficulties to be
very much greater than in the first case. In
the stereopticon the images can be enlarged
to life size and thrown upon q screen with
astonishing vividness.
Possibilities of the Instrument.
| The kinetograph bestows distinctly new
and most important gift on mankind. In al
far rs nerve and muscle can be educated by
initiating the dexterity of mechanic, chemist
surgeon, or artist, its reproductions will be
Invaluable. They repeat every movement
of the hand, not simply as one might OBJ
serve it at work, but as the eyes would see
1t if they were quickened and sharpened
| tenfold. A good deal might be learned by
watching in this way how an Australian
throws a boomerang, a Daccan weaves the
tissue SO delicate as to be called woven
wind, and how the artists of Japan form
and decorate their pottery and bronzes.
For an example of the benefits we may
expect to find bound up in this new acqui-
| sition, let US note its availability in teach
ing the dumb to speak. Deaf mutes learn
to interpret what is uttered by closely OBJ
serving the moving lips and facial muscles
Let a speakers lips be photographed,
in their series of motions, as he
gkrJ
ures placed in the kinetograph the learner
may observe the motions of articulation
until he has mastered them perfectly. An
artist who sees quarrel, an embarkation, a
group of youngsters picking berries, finds
the groundwork for popular canvas or
etching. His camera does not supersede
the pencil and brush, but simply frees him
from the drudgery of filing his sketch book
and portfolio. Later, pehcil and brush do
their work in arrangement, in composition,
in the suppression and emphasis in which
80 much of art consists.
What q Camera Can Do.
. Not only can the photographer get pict-
ures of inaccessible places with the camera
under his hand, he NAV on occasion send his
instrument to points where he cannot follow
it. Lowered through a chink, into quarry
rent with earthquake, it has been the means
OF rescuing score of imprisoned
workmen. Sent to the depths of
the sea it has brought up rec
ords of what it saw there Attached to
balloon, it has been foated over an enemy's
camp and returned with full intelligence of
his strength and distribution. In a photo
graph obtained ZOO yards above Stamford
Hill, in the northern part of London, the
Typographical features were so well defined
that with the aid of a microscope, the
smallest objects could be recognized easily.
On ordinary ground having no extreme
distances Of level, 1t is now practicable by
balloon photography to attain more accurate
plans than those OF ordinary surveying. For
that exscting kind of work lenses are de-
manded having wide, fat fields, and giving
with the utmost truth. To the
opticians who have made these lenses pho
owes debt only second to, its OBJ
legation to the chemists who have so much
enriched the resources of both the camera
and the various processes which follow its
work. In recent combination by DALI
meyer, an instrument is at once telescope
and camera, welcome simplifcation in tax
ing pictures at long range.
Combined With the Microscope.
As lenses have been refined and perfected,
photography has been applied to higher and
higher powers of the microscope, until now
we have prints exhibiting the sections of
leaf buds amplifed more than s, 900 diane
ters resolving their threads into beautiful
beads. The best work of this kind in
England has been done by DR. Maddox,
whose compeer in this country was the late |
Colonel Woodward. Photo-micrography |
low furnishes images of the bacteria whose |
means diphtheria, typhoid |
md other deadly diseases. 1t enables abnor- |
al 81 h.
be portrayed, as a basis for comparison in /
The treatment of yellow fever and similar |
ailments.
These are onlys few of the benefits the |
physician receives from the camera It |
photographs the laryn1 in the act of utter |
ance, and in both health and disease. |
Obscure arrangements OF the eve and of |
other parts of the body, difficult to observe.
have been limned on the sensitive plate for |
examination. On analysis of one
Of the series of instantaneous photographs
aiken by Mr.. Muybridge, showing patients
With lmpeded or violently excited move
nents of the limbs, it was found necessary
20 correct former explanations OF the ner-
Tous and muscular arrangements involved.
The same method of portraiture is now ap-
olied in France, with great instructiveness,
% eplleptic and hypnotic patients
A New Exposure Meter
In taking a picture in a dimlv lighted
hospital ward or other obscure interior, or
'ut of doors under dense foliage, the pho
ographer, especially if he be an amateur.
las trouble in deciding the time of expos-
Ire. With frank recognition of the diff
ulties it expects to meet, a new English
Exposure meter greatly reduces the chance,
f taking poor picture.
As photography multiplies on every
and its alliances with art and science, the
mateur is likely to become less and less
atisfied with random shots at ANYTHING and
verything. He sees how, bv giving IL
ONE definite aim and connection. he can
nvest his work with a fresh and vivid in
crest. Perhaps a bridge is being construct
d in the neighbcrhood. As the spans rise
rom day to day he follows the process some
Insight into the methods of modern en-
ineering resulting. Last year while the
eautiful groined ceiling of the new public
brary in Boston was being cemented a
cries of photographs was taken revealing
lie rare ingenuity of the Italian builder
t times work of that sort rises to yery
ractical worth. The designer of the FI-
ibitiou grounds at Chicago, Mr. f. L. Ohm
ed, receives photographs once a week in
oston showing how the plans are takinp !
rrn. In such report there can be moth
g forgotten or CLOSED over ,
GEORGE LIES. !
Block Signals on Railroads,
orth American Review.l ,