1/2 oz.; tallow, 1 oz.;
red lead or red ochre, 3 oz. The manipulation is about the same for the
three kinds. First, the resins are melted with as low a heat as will
suffice, then the turpentine, previously warmed, is to be added, and
lastly the coloring material. The first quality is only used in sticks,
and the third, when melted, for dipping bottles in. The second can be
employed for either purpose. When the wax is used for dipping it should be
kept at a temperature just sufficient to render it liquid, as too much
heat causes it to foam and to rapidly become brittle. Even with this
precaution, it is necessary to add a little turpentine, from time to time,
to replace the essential oil lost by evaporation.

FOR MAKING DEXTRINE.

Five hundred parts of potato starch are mixed with 1,500 parts of cold
distilled water and eight parts of pure oxalic acid. This mixture is
placed in a suitable vessel on a water-bath, and heated until a small
sample tested with iodine solution does not produce the reaction of
starch. When this is found to be the case the vessel is immediately
removed from the water-bath, and the liquid neutralized with pure
carbonate of lime. After having been left standing for two days, the
liquor is filtered, and the clear filtrate evaporated upon a water-bath
until the mass has become quite a paste, which is removed by a spatula,
and having been made into thin cakes is placed upon paper and further
dried in a warm situation; 220 parts of pure dextrine are thus obtained.
When needed for making mucilage, the solution has only to be evaporated to
the proper thickness.

COLORS FOR PRINTING INKS.

The different colors, and the inks which may be made from them, are as
follows:

For Red.--Orange lead, vermilion, burnt sienna, Venetian red, Indian red,
lake vermilion, orange mineral, rose pink and red lead.

Yellow.--Yellow ochre, gamboge, and chromate of lead.

Blue.--Cobalt, Prussian blue, indigo, Antwerp blue, Chinese blue, French
ultramarine, and German ultramarine.

Green.--Verdigris, green verditer, and mixtures of blue and yellow.

Purple.--A mixture of those used for red and blue.

Deep Brown.--Burnt umber, with a little scarlet lake.

Pale Brown.--Burnt sienna; a rich shade is obtained by using a little
scarlet lake.

Lilac.--Cobalt blue, with a little carmine added.

Pale Lilac.--Carmine, with a little cobalt blue.

Amber.--Pale chrome, with a little carmine.

Pink.--Carmine or crims