New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1909-02-01

At the season Of the year when an enormous
number Of lectures are being delivered. both FOR
education and entertainment, no little interest
Will be felt in fairly successful attempt 80
achieve Improvement in the arr Of illustrating
such talks The majority OF the pictures used
on these occasions are photographs. projected
upon screen by a magic lantern. Sometimes
they are plain and sometimes they are painted,
but rule one picnre is shown at a time and
the substitution Of another is conducted by hand.
With the cinematogrsph ii is possible 70 repre-
sent moving objects procession. a troop Of
cavalry. OF an orator gesuculatng. for instance.
When that device is employed series Of photo
graphs, imprinted on a flexible film. is displayed.
ingenious mechanism serving the double purpose
Of moving the strip with remarkable CELEBRITY and
hiding it while it IS being shifted Hitherto,
however. it has not been found feasible 30 com
hine with this method Of Illustration any OF the
systems OF photography IN color In the issue Of
Mature" for January II may he found an &C.
count of experiments 10 effect the combination
made by two Engiishmen with an encoura ging
result
The plan now partly iaptei u new kind OF
service is really old one Three photogra phs
Of the same object are tskeG simultaneously with
separate lenses and through glass covers TOR
screensI having different hues. With the mega
tves so obtained "halftone" plates can be pro
duced from which, used in succession and with
properly selected inks on 8 printing press. 4
fairly accurate reproduction Of the original
+ colors can he secured The negatives may also
be used 10 make pictures for the magic lantern
or course there must be three plates each with
I separate color screen over il and triple ian.
tern whose images are focused 50 as 20 overlie
/ each other With precision or. the printer
would say. register" satisfactorily. IS also need
ed. buzz that difficulty long ago overcome.
Another was encountered when the Eng ish1nen
found that the vibration Of a CineHatogrsph at
first prevented the coincidence Of the three met
ures. They found il necessary. therefore to
print them side by side On 3 single film. instead
Of using separate films They also modified
their procedure s. IS 20 get along with two
colers, thus taking further step toward sim
plifying complicated piece Of work. The result
a periodical Of high standing feels warranted in
saying that a really practical method was
adopted
For moving pictures IN which the colors OF
the original are faithfully represented there Is
likely 10 be only limited demand Certainly
{ until the images can be shown with greater
steadiness than is now customary too severe
strain Will be imposed on the eyesight 10 be en-
durable for more than few minutes There is
IN imperative need for reform in this particular
Such an Improvement is entirely practicable no
doubt and fresh reason for seeking II Is afford
ell by the experiments here described This pos
sinility and the chance OF attaining greater cor.
rectness il color than hss vet been realized ought
10 stimulate efforts il both directions. Perhaps
something really worth seeing may YET be pro
duced