Deseret evening news. [volume] (Great Salt Lake City [Utah]) 1867-1920, 1891-04-16
PHOTOGRAPHIC IN C0LOas.
THE riRsr EXPERIMENT MADE BY sir
JOHN 1iERsIEl..

ms announced 10 the Academy oi
Sciences at their last meeting that he
has discovered a new process In pho.
Biography by which Colors throughout
the whole range OF the spectrum cau
be Reproduced ON n sensitive plate most
accurately. Colors are but numbers NJ
| light waves M outlines or shadows are
liked 10y the present Photographic
negative and print. The professors
flrst attempts TO take colofed photo
graphs have not gone beyond the ox.
detrimental stages.
A long time will, ! fear, clnpsc be-
fore this branch ~ the art Is brought
10 the perfection Of the othcr-. After a
few weak attempts the professor has
succeeded Ia phOiographiny htuned
window IN cOlOrs ~ BRILLIANT as the
original.
According 10 the mcagre accounts
given a. the public, II stems that the
plates nrc pressed against the opening
% a trough VI mercury which iDrmcs
mirrur Ia contact with tie plate.
The rays u light ptss through the sem
sitivc HIN. n IN tie old process, but ON
reaching the other side " the plate,
instead Oi being AFFORDED 10y . dark
background they ari sent hack by an
even surfaces Uf the mercury. In this
mirror the whole secret lies, for apart
from It the process I. the same ~ In
ordinary photography.
Dagucrfc frequently said that when
he had been copying any red brick ur
painted building the phytpgriph ~.
sumcd tint of that chnrarier. and lac
lnborcd considerably for the attainment
" cOl0rs. 81 lid his colleague,
Nlcpuc, work to the same end, with his
bitumcn-coatcl tablets, aud the report
spread NIL over lsutUpo that he had
actually made the great discovery.
Sit juhu lI0r-chcl, the eminent ~.
trpnumuf aud philosopher, actually
succeeded In procuring upon paper
imprvgnatcd with the cOlOrcd Juice VI
flowers a faint coi0TeI Image " the
solar spectrum.
lie also stated that he had specimens
Of paper long kept which gave u much
better representation 10 the -Icctrum
In III natural color- than he hal before
obtained. There Is no doubt that
Hcrschol was the frst 10 discover the
method Of producing natural cOlon,
about 1889 or 1870. II must not he for.
gotten that 10 his experiments We owe
the introduction u hyprrsulphltc Of
soda ~ iixing agent and he also INT
suggested glass plates for photographic
use.
Sir Robert HUNT experimental very
much, and obtained IN many instances
colorcd pictures Of the spectral rays,
dark upon bright ground. His
paper In theIhlOsgphicai Mdgd-ino for
April, 1870, was entitled "Expcri.
mcnH aud Observations ON Light
Which Has pormcatcd Colorcd
Media" ami In II he described some
curious results ON some Of his photo
graphs prepared with hydrolic salts,
exposed 10 luminous influence, with
colorod ilulds suporimposod. The
violet, blue, green aud red rays pro-
duccd not their natural, but com.
Elementary colJs. Some pieces OF
paper which he prepared with bichrp-
mate OF potash aud "a very weak sOlu.
ton Of nitrate of soda were under
colorcd glass for ten days In window
having a southern aspect, and gave a
tinting Of blue, green and red.
NJ. Edmond ACKNOWLEDGEMENTS
In 1880, and succeeded la producing
ON metallic plates the cOlors OF the
spectrum, and copied some colored
prints. His process was ns follows
Into "a Jar OF muriatic acid diluted with
from onc 10 two parts water, he placed
n silver plate, having previously con.
ncctcd II with n positive pole Of n gal.
vanic battery, the negative Of II terml.
mated by u strip OF platinum. The
silver aud platinum we're kept about
one Inch apart until the former became
coated with the nascont chlorine 10
violet hue. II was then rlnsed and
dried and exposed 10 the coloed rays.
After AN exposure OF from one 10 two
days q cOlored Image was formed. He
rarely obtained more than one or two
cOlors at once. They were not bril.
liant ana always evanescent.
In 1851 n nephew OF Daguerrc'- part.
ner, NJ. Niepce de st. Victor, published
OF hellOchrOmy, and that he could, 10y
his process, copy colors from mature ON
silver plates. | am not aware OF his
formula, but he exhibited SOME pie.
lures at the Crystal Palace In 1852,
and though they were In dark place
they had nearly faded out when l saw
ihcm. In 1850 1 paid visit TO Dr.
Diamond OF Surrey, England. lie
was then experimenting perseveringly
with various formulas tending 10 color
photography. He showed me the
only good picture | have ever seen
mnde with n camera and lens In color-.
II was u view Of an old-iashioned,
two-story frame clapboaried house,
with moss and llchens In many places
over the doors and windows. The
picture was partly colored, tho llchens
showing their yellow aud gray mark.
ing-, and the house OF dark brown
color. 10 was very pretty, hut the
doctor said II was taken while ho was
and he could not AZ.
count for II. IL was really sun pic.
ture In cOlon, and the only genuine
one ! ever saw, ut least such In my
opinion.
About the same time Mr.. l.. l.. HIN,
y travelling dagucrreotypist, announc
that he had at last discovered the
grard secret Of hellochromy, and could
take landscapes and portraits In their
natural color. This news created
great excitement all over the scientific
world, especially among those who
were pfOicssed dngucrrcotypists, In
with Prof. \. II. Morse ON
the subject, he assured mo that hs had
made u visit 10 West KIN, tue resi-.
icnco Of Mr.. lin, and had seen the
pictures said TO ba Aken by his newly
discovered process.
According to his account they were
W wonderful productions OF cOloreI tla.
OF living subjects, nv well
~ exact copies NJ c0lored paintings.
Although the professor did not see the
pictures made, he beloved them to Ice |
genuine Many distinguished men