El Paso herald. (El Paso, Tex.) 1901-1931, 1919-03-19
MAY.
NOW PASS AWAY.
No Longer Any Need For
It; Some Cute Tricks Of
the Late War.
b. FREDERIC J. HAsKIN.

Washington, D. c.. March 19-Amer-
lean submarines have recently been
getting q new coat Of paint which is
scarcely less wonderful in its effect
and it's value than the disappearing
cloak OF the fairy tale.
When looked at with the naked eye
these submarines appear a uniform
dull gray. just the color Of the ocean,
so that it is very difficult 10 see one
Of them at a distance OF a few miles
But IL the same boat is scruunized
through glass tinted 20 certain color
which is kept secret bold and strik-
ing design appears on the submarine
making IL visible. and recognizable
as an American craft at great DIS
lance
This remarkable result Is obtained
by painting the design upon the sub
marine in a special kind OF paint,
which has liEht-attracting qualities
different from those Of the paint used
on the rest Of the submarine To the
naked eve the two kinds Of paint ap-
pear almost alike, and the design is
indistinEuishab But the colored
glass filters" out some Of the light
rays. making the design plain by con-
rrast
The man who perfected this
paint and glass combination gave
n very convincing demonstration
Of its properties TO the office who
was sent TO inspect his work. He
showed the officer a board, paint
ed the dull gray Of a submarine,
with m iron cross designed on Il
in black. He then handed the Of
fIcer n field glass provided with
freak filter. and babe him look
again. The officer was amazed to
see the iron cross disappear. and
the emblem OF the United States
mhnmuh nv
in its place
This use Of paints with contrasting !
powers Of light absorption Is just one I
branch OF a new and little known /
which was developed during the war, ]
and was just reaching q high degree
OF ingenious perfection when the war
ended
End Of CnmOunaEe-
This unfortunately appears TO be
the one war invention which has lit {
tie prospect Of further development in
time OF peace If the league Of nations
makes good camouflage detection,
which would have a considerable place
only in wars between great powers. is
as dead as the ancient art Of making
glass gems But some Of its methods /
and discoveries may vel be used in
the future For example, a hunter
who sweeps mountain scene with
his glass, trying to SPY out herd Of
va AAaA - 0A 4AAAAaaAAA HlALGr 1I AAA IL 4
ng 10 glass OF a certain color, viii
make the animals stand out from their
environment in sharp contrast He
VII be able TO set protective colora-
ION" at naught-
And again, the explorer, flying over
3 wild country in an airplane, viii be
ible TO take a picture which viii be a
nap. showing not only rivers, plains,
orests and other features independent
Il relief; but also the hills and val ,
cystic topography. For a part Of
he science Of camouf1age detection :
ousists OF taking stereoscopic pic !
ures which exaEgerate every irregu- {
ariry in the land =
No doubt other uses viii be found :
OF this method for juggling with light Z
nd color which has been worked out =
- the cam0uflage detectors. y
Detecting CamouflaEe. 7
The British were the first to tackle 2
he problem Of seeing through the 2
isguises which hid enemy batteries. b
Dads and dugouts. They began by g
Working on the simple and well known +
.riuciule that class Of a certain -o1nr o.