e no lumps in
the paste.

A VARNISH FOR MAKING PAPER TRANSPARENT.

A varnish formed of Canada balsam, dissolved in turpentine, supplies a
most valuable means of making paper transparent. The mode by which this is
most satisfactorily accomplished is by applying a pretty thin coating of
this varnish to the paper, so as to permeate it thoroughly, after which it
is to be coated on both sides with a much thicker sample. The paper is
kept warm by performing the operation before a hot fire, and a third, or
even a fourth, coating may be applied, until the texture of the paper is
seen to merge into a homogeneous translucency. Paper prepared according to
this process is said to come nearer than any other to the highest standard
of perfection in transparent paper. Care must be used in making, as the
materials are highly inflammable.

CARBON PAPER.

To make carbon paper:--Take of clear lard, five oz.; beeswax, one oz.;
Canada balsam, one-tenth oz.; lampblack, q. s. Melt by aid of heat, and
mix. Apply with a flannel dauber, removing as much as possible with clean
woolen rags.

LUMINOUS PAPER.

To make paper which shall be luminous in the dark, it is sufficient to
mingle with the pulp the following ingredients in their
proportions:--Water, ten parts; pulp, forty parts; phosphorescent powder,
ten parts; gelatine, one part; bichromate of potash, one part. The paper
will also be waterproof.

SIZES AND WEIGHTS OF DRAWING PAPERS.

The following are the sizes and weights of drawing papers:

Inches. Lbs.

Emperor, 72 x 48 620
Antiquarian, 53 x 31 250
Double Elephant, 40 x 26-3/4 136
Atlas, 34 x 26 98
Columbier, 34-1/2 x 23-1/2 102
Imperial, 30 x 22 72
Elephant, 28 x 23 72
Super Royal, 27 x 19 54
Royal, 24 x 19 44
Medium, 22 x 17-1/2 34
Demy, 20 x 15-1/2 25
Large Post, 20-3/4 x 16-3/4 23
Post, 19 x 15-1/4 20
Foolscap, 17 x 13-1/2 15
Pott, 15 x 12-1/2 10
Copy, 20 x 16 20

TO MAKE BRONZED PAPER.

Dissolve gum lac in four parts by volume of pure alcohol, and then add
bronze or other metal powder in the proportion of one part to every three
of the solution. A smooth paper must be chosen, and the mixture ap