The sun. [volume] (New York [N.Y.]) 1833-1916, 1902-11-09
LOTS OF INVISIBLE INK HANDY.
IF VOC CAN'T my 1T, VOC can
MAKE IT FOR YOI RSELF.
People Apparently ttiting Their secrets
Win II Now just as They MD Crn.
turtles tgo-OrsnEr, and Lemons sup.
pis lt-rri,ks al LAYERS aud Others.

on,' upon /. tina few c"Ltuiir- w"
il waS. Ia b" -I:r-invisii,c int played
,1,'i' an im,pr;acr par in history and
romance. Tu-cay 4 secmr 80 ir . right.
scare. gf'i't.n in thi. ,ovn.
Few person, = would H'uaav, hav" c,ar
S''a in,.ei'l' ink rn,.cI, i,.-s u-,di. Real
'asl'rs in inE. go FAR g. can he sscert ired.
d"n'i h""p.it IN stock. and even the lead
ing nidluidC turers of standard inks a.
.,nu" q reminiscent expression when tho
-'ihi";' il Toa"h"d.
"O'ir fa''biv j. in Chicago laid one
and hr -,EdiDl. th"rc pr"s',me | Conii
g. ONE i"v!.ib'" inl;. but W. hateI'i
a r"t'l" OF IL here"
Nd he us the lro,' encouraging Of ali
tho 'narhi+.f ur"r- questioned. lie o,aa's
aH..o-' w,;hnii "y.-pripil. '"'isr"d frankly
nat tn"y neither mdu" nor Kept IN sip"k
IN ri> bic ink although rgaGr 'uough ~
arv time 80 M an order 60; th. Nuid and
They all agreed that wi m thew r"col-
lection ,I.ro had bee! no demand 'ar it
ON trt principc. though. ,h"i history
repcai- us"iT. some people M that in
NSill" lax vii come ipt"tdshion Tgiin. ana
they hA.o iNeir prediction ~ IT" '1C' ma
only the o,Ecr dar letters written wit
invisible irs figured IN divorce case. ani
1lat th"r siru' t"-'i'ron" resulted ~ vi
tory Tor ~" plaintiff ~ hos" wife he'd 'yri''eu
thrni =" another man.
y ;'s' d'serprtr, mcN' ut spri' people
u 'yas u"' r",nalAd ~ -ho rial ma what
rawie1ar % aII Of ink u, "a ir.ed ~ wiring
tlc i"''pr~, nv whore tie. -o!,I.icu wa- r'-
'.1c| According TO trcar,'ll ,"prk. ~
u" .GnieHt the" az" almost ~ many "GIi"-
tins Of Invisible ink ~ her" are of The inks
used for iinnrv purpose.
For inst .nco. clarac' ers written ~ 4
w"sL "ol,;ion or gals dcrelnr y dark color
.. treated with a solution of c"ppcra-,
ana '"ritinS Jono ~ "opperae j. developed
b: yal| -cl,r on. Nsol'Ifiou ~ the aretaie
and 49, cn! ride v' cobalt az The chlprihn
81 r,ck'' 81 "' ",nal parts Of ,ulphatc e
."if" sHi ~ ANN .'r3' w!on applied
- Iup"r develop c-'l"r ~ Icing heated.
aud 10 col'' fa-r~ n In. lal~r Goods.
Characters '"a"'H In weak solution
sc ui'ra.' - silver dsrk"u on exposure
to ,,soug fgh,. and il nritIcn win n
solution If acetate NJ Head IN distilled water
will com" gu, black if q sol, ion Of alkaline
sulphurct il passed over the paper.
There are other liquids easier to get at,
which answer the same purpose lust as
wei, S'It N Dis FlilOT dnu oftIlg" JuiCt dTo
the juice of an onion, leek. cabbage. or
artichoke All Of these change color
whom applied to paper and held to the
FIRE
I, was lemon and orange juice in particu-
lar that found favor in the far past with
men and women upon whose heads often
times price was set: with separated wives
and husbands and with pining lovers dur.
ing The troublous times when everybody
was afraid Of everybody else.
Secret correspondence is. and always has
been an art dear to lovers the world over
Yet, strangely enough. letters written with
invisible ink have figured oftener IN the
intrigues and troubles OF statesmen, than
In those between men and woman.
The real letter. done with an invisible
solution, is hidden away between the lines
Of the dummy. The following received
by young French officer captured during
the Franco russicn war. and on the eve
of being put TO death, will illustrate the
working Of this me hod:
DEAR FHLIx | am overwhelmed with
grief. Your comrades have done all they
can to saw" you. hut alas without avail.
IErov YOU ar" too proud 70 beg for mercy.
and that You wal die like a brave man Fare
we'll Henri
This is how Felix read il after putting
the paper under water: