en days, and strain; if needed sooner
let it stand in an iron kettle until the strength is obtained. This ink
will stand the action of the atmosphere for centuries if required.

TO MAKE RUBBER STAMP INK.--Dissolve Aniline in hot Glycerine, and
strain while hot or warm.

COMMERCIAL WRITING INK.--Galls one ounce, Gum one-half ounce, Cloves
one-half ounce, Sulphate of Iron, one-half ounce, Water eight ounces.
Digest by frequent shaking till it has sufficient color. This is a good
durable ink and will bear diluting.

TRAVELERS' INK.--White Blotting Paper is saturated with Aniline Black,
and several sheets are pasted together, so as to form a thick pad. When
required for use a small piece is torn off and covered with a little
water. The black liquid which dissolves out is a good writing ink. A
square inch of paper will produce enough ink to last for a considerable
writing, and a few pads would be all that an exploring party need carry
with them. As water is always available the ink is readily made. This
is a perfectly original and new recipe. Any enterprising man can make a
large income out of its manufacture.

INDELIBLE MARKING INK WITHOUT A PREPARATION.--Dissolve separately one
ounce of Nitrate of Silver and one and one-half ounces of Sub-Carbonate
of Soda (best washing soda) in rain water. Mix the solutions and
collect and wash the precipitate in a filter; while still moist rub it
up in a marble or hardwood mortar with three drachms of Tartaric Acid,
add two ounces of Rain Water, mix six drachms White Sugar and ten
drachms powdered Gum Arabic, one-half ounce Archill and Water to make
up six ounces in measure. It should be put up in short drachm bottles
and sold at twenty-five cents. This is the best ink for marking clothes
that has ever been discovered. There is a fortune in this recipe, as a
good marking ink is very salable.

INVISIBLE INK.--Sulphuric Acid one quart, Water twenty parts; mix
together and write with a quill pen, which writing can be read only
after heating it.

HORTICULTURAL INK.--Copper one part, dissolve in Nitric Acid ten parts
and add Water ten parts; used to write on zinc or tin labels.

GOLD INK.--Honey and Gold Leaf equal parts, Turpentine until the Gold
is reduced to the finest possible state of division, agitate with
thirty parts Hot Water and allow it to settle. Decant the Water and
repeat the washing several times; finally dry the Gold and mix it with
a little Gum Water for use.

SILVE