The Detroit times. [volume] (Detroit, Mich.) 1903-1920, 1910-12-20

Ing IN Europe. Most printing inks arc
made from SCOT black. India ink AMI
other fine inks used by artists ara
made by special processes, the best
india Ink coming from China, where
SCOT, glue and camphor are used III
It's manufacture The artists ivory
black Is made from ivory.
Ultramarine has most interest.
ing history. AS caeruleum, an an.
Client Egyptian pigment. still seen In
the ruins OF Pompeii, Cairo and Alex.
andria, where IL has withstood thu
action OF time for twenty-five cen.
turtles or more, this substance was
made by powdering lapis lazuli,
precious stone, found in the Orient.
IL was worth many times It's weight
in gold. II is only within the last
twenty-five years that 1t has been
manufactured from the base silica,
calcium, copper and iron oxides.
The discovery of coal tar colors
Is the great romance OF modern sell
ence. Ages ago the gaudy flowers
and plants that grew on this hot,
moist planet decayed and. being COW
cred with rock, were converted by
pressure into coal. II is only for two
centuries that man has known how
to extract from coal the heat which
was stored up in IL during the car
boniferous age. The latent light and
color In the black diamond" needed
only the magic touch OF the syn.
thetic chemist to be released This
touch was not given until fifty years
ago, when foreigner discovered the
secret. Now, from the grimy refuse
or coal heaps more than 400 coal tar
colors have been rescued, which are
used in the manufacture of social
ed lakes"
some OF the giant railroad bridges
or the country require hundreds and
thousands or gallons OF paint to pro-
tect them from rust and other trou.
bles coming from exposure to the at
mosphere. The reason all railroad
bridges formerly were painted red
was because for long time il was
Deiieved that red paint was better
Tor structural steel than any other
KIND. Then someone thought to make
exhaustive experiments and il was
demonstrated that red was no bet
ter than some other colors II is
said that when the authorities found
mat the salt air OF New York har-
Dor was eating away the bronze OF
the great Goddess OF Liberty. they
decided TO give the majestic lady a
dress that would protect her, and
they spent $4,000 for the drapery
OF paint with which she was clothed.
The suffragettes of the country
have abundant reason for complain
ing about the decision OF a Chicago
Judge In the case OF woman sign
painter A few years ago the people
going TO work one morning were as
tonishef to see woman gowned in
immaculate white sitting in a trapeze
some two hundred feet above the
sidewalk, painting hugh sign. Her
hair was flowing loosely over her
shoulders, and soon there was a per.
rect mob gazing up at her and mar
yelling at her temerity, no less than
wondering at her invasion OF this
peculiarly masculine field OF endeav.
or. The police did not attempt to
disperse the mob. but arrested her
and had her fined But she had sue.
ceeded In advertising her wares, for
which she received a sum that made
the notoriety worth while.
The production OF mineral and
earth paints In America In 1900 was
over $4,000 tons, valued at $313,l33.
Generally speaking, the mineral col
ors are more valuable to the painter
and the vegetable pigments to the
dyer. Even skinned milk has been
called upon to furnish casein for the
manufacture of water paints. Min
eral paints are used in decorating
china, the color being burned into
the clay. Oil paints or stains are
generally used for outdoor work. but
the use of water paints is growing
rapidly, as they are being perfected
so as to withstand chemical and at
mospheric action.
TomorroW-PIanninu the Tow.