New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1895-04-22
ILLUSTRATION BY COLOR PHOTOGRAPHY.

ILL STRATGON BY COLOR PHolouhAfhi'
ADAPTING THE "stNGLE-sCREEN" PROCESS TO
BOOK ANp MAGAZINE WORK
4 sudden and mysterious change as wonderful as
any Of Herrmann's transformations. was wrought
in photograph which a visitor to The tribune
editorial rooms was showing "A few days ago lie
had A small black and white transparency, on
plate measuring by inches. and representing VITA
about the accuracy one would expect from an orit-
nary camera A japanese screen. The original. hoy
eyer had patches OF red. pink. yellow, green ann
purple on Us surface. and though the figures ana
forms were reproduced correctly. this coornS WI
entirely lacking in the picture. The exhibitor also
had thin sheet Of transparent celluloid, OF the
same, dimensions as the glass. II you held 1t UP !"
the ltn. II appeared devoid Of color. although upon
SUBSEQUENT examination with reflected liglt Il was
possible TO detect a slight iridescence on one sur
face The ceulod was laid over the photograph
the two were held up against a windo" "hich
opened on A clear sky. and the uppermost Him was
slowly shifted about by the operators thumbs
Then all AZ once. the picture took on the appear
ancr Of a crazy quilt and after few seconds re-
veaed with approximate fidelity the colorS OF tho
japanese importation. The celluoid was removed
and presto, the transparency was reduce 10 us
former monochromatic condition The means ny
which this feat performed is no secret nut the
process promises 10 have some new ana Nas"ape III
dustrial applications in the future.
In the attempts which have been made pho
Geographically to reproduce the colors OF op)ects'
several different methods have been employed.
None OF these have been attended with e"'lfe sue
cess But the principle which, up TO the present
time has welded the best practical results. is this
II three separate pictures be taken through glass
or liquid screens OF different and scientifically Sc
ected colors and these be used as transirirencies
In combination with the same or similar screens
they may be- merged in one which will possess
substantially correct hues At first. these black
side but adjusted so that the light rays coming
through the three (and their colored covers would
converge and unite. The observer looked, either
into A special instrument whose eye-plecS was II
the focus OF these rays. or else al whit" surface
on which they fell accurately supervising one
uic,ure upon another. This could be don" admir-
ably with "A triple magic-antern In DARK room.
Later the prints were made on sheets OF geia'ihe'
which were dyed. each Of the three with The color
of the screen under which ii was originally taken.
These pictures were laid one on top of the other.
and a simple lantern and lantern-sde were usei
in projecting the image. This plan did not give as
sharp outlines as could be desired. but its posi-
billtles have not bceen exhausted yet perhaps Inc
thrce-plate photographs system has also Deen eN'
tended to acknowledgements during the last lie"
wears and IT is now practicable to multiply WIN
camera press ink and paper. tolerable lkeneSseS
of fruit flower natural scenery. oil paintings ana
Turkish rugs But these pictures are more interest
ing for what they likely to lead to than for
what they really are.
An interesting attempt to simplify this general
method was announced IN The Tribune u lew
months ago. II proposed to get along with
one color screen. both In the camera ana ai'er"ard
In exhibiting the picture. and this meant. OF course
only one negative and positive The screen. how
ever was b. composite. and bear Inc same
three colors torarge-red green and violet-hue) as
before These were not mixed In acVanNel nor
spread over each other or the glass but dis
tributed over the surface in line lin"s or minute
sp.cks When the first public announcement 81 THIS
plan was made. the credit OF it was gwen 10
Dublin eNpermenter. Professor Jolly. IL appears
however that as long ago April 1892 James
w McDonough. OF Chicago who has beeen CON
spcuous as one of the inventors OF the Telephone,
received patent embodying the essential principle
His method was TO scatter hne part''ies OF coloreo
glass or other transparent material upon sticky
surface in order to coat his plate, and he applied
IN. coorng directly to the sensitive film. 1t Is
possible that Jolly may have been the first to ar