The times. [volume] (Richmond, Va.) 1890-1903, 1900-07-31

. ious fidelity are obtained. giving all nual,-
ties OF texture, sheen. TRANSPARENCY and
atmosphere to a degree impossible to any
color on paper. Pictures OF the old masters
can be reproduced and seen in the photo
ctronoscops with all their original oual,.
ties. Scientific objects. specimens for
natural history collections, beauties of
landscape. botanical specimens. tapestries
and textile fabrics of all kinds may be
studied through these color images as sat
!sfactorily as from reality.
The color records take up no more room
than ordinary photographs. and il the cost
and difficulty of the production can be de-
cidedly reduced this form of color photo
graphy may be utilized to great advantage
IN schools. III medicine. in many of the
other sciences and in commercial business,
where 1t could represent the quality and
appearance of goods more satisfactorily
than any print or fragmentary sample COL
ored photographs of the most beautiful
species of butterflies have been among the
greatest triumphs Of this process and not
the smallest element OF the beauty Of the
original is lacking in the reproduction The
miniature kromskop is the latest and sim
plsst development of the apparatus and Is
less expensive than the original instru-
Inent-
ANOTHER WAY.
Another method of color photography
finding great favor to-day applies the same
principles in another way. The light is
projected upon the plate, not through three
screens. but through one screen closely
ruled in orange, green and violet These
lines are ruled on gelattne plates In pig
ments made up as inks. and these are
from 500 10 LOCO to the inch. although when
the lines exceed AGO to the inch the eye
ceases to be annoyed by them. The re-
sultant lines upon the positive Register. of
course. the degrees in which the three color
sensations would have been produced Then
n second screen. ruled in red, green and
violet, and gagged exactly in accordance
with the first. is moved over the positive.
producing waves of all colors until it
reaches such a position that the red lines
fall exactly over the lines recording red
sensations. &c, when the picture appears
in vivid and realistic color.
In this process. as in the other described.
a seeing apparatus is necessary as wen
as n taking apparatus: but as the whole
secret in this case lies III two adlus1apie
screens. both the taking and the seeing
Instruments are much more simple.
Within the last four years n Frenchman
has attracted great attention by his as
sertions concerning new and efficient
forr, of indirect color photography, but
as he has maintained absolute secrecy in
regard to certain features of his process
sc entiStS have accepted ms results WIN
some doubt and have withheld judgment-
Members Of various English and French
and American scientific societies have
however. Investigated the method az lar
ac nocsirle and have reported, that ii seems
TO be a legitimate scientific process. al
though the inventor reserves Information
as to the ingredients of solution used by
him His negative is taken OF: ordlila,S
rejatine plate, prepared by treatment with
the solution of unknown composition the
negative obtained shows no trace OF color:
A print is taker from it on aIhuminaZed
silver paper treated with the solution. This
print shows no color. When dry it is
washed with the secret solution and treal e
washed with the secret solution and treated
successfully with color solutions in red
blue ana green. under which process the
print assumes the natural colors OF the
object photographed The process mas
an advantage in producing q permanent
print but the colors are faint and the
image not to he compared in fidelity ana
beauty with those secured through the
other methods desCribed.-New York Sun.