ing seen through
the glass.

SPLITTING PAPER

It is sometimes desirable to split pieces of paper when the matter on
one side only is needed, or when the matter printed on each side is to
be used in different places. The paper to be split should be well
pasted on both sides with a thickish paste, and fine linen or jaconet
placed on each side. It is then nipped in the press to make the linen
stick all over, and left to dry.

If the two pieces of jaconet are carefully pulled apart when dry, half
the paper should be attached to each, unless at any point the paste
has failed to stick, when the paper will tear. The jaconet and paper
attached must be put into warm water until the split paper floats off.

INLAYING LEAVES OR PLATES

[Illustration: FIG. 16.]

When a small plate or leaf has to be inserted into a larger book, it
is best to "inlay it"; that is to say, the plate or leaf is let into a
sheet of paper the size of the page of the book. To do this, a piece
of paper as thick as the plate to be inlaid, or a little thicker, is
selected, and on this is laid the plate, which should have been
previously squared, and the positions of the corners marked with a
folder. A point is made about an eighth of an inch inside each corner
mark, and the paper within these points is cut out (see fig. 16). This
leaves a frame of paper, the inner edges of which will slightly
overlap the edges of the plate. The under edge of the plate, and the
upper edge of the mount, should then be pared and pasted, and the
plate laid in its place (with the corners corresponding to the folder
marks). If the edges have been properly pared, the thickness where
they overlap should not exceed the thickness of the frame paper. If an
irregular fragment is to be inlaid, it is done in the same way, except
that the entire outline is traced on the new paper with a folder, and
the paper cut away, allowing one eighth of an inch inside the indented
line.

FLATTENING VELLUM

The leaves of a vellum book that have become cockled from damp or
other causes may be flattened by damping them, pulling them out
straight, and allowing them to dry under pressure. To do this take the
book to pieces, clean out any dirt there may be in the folds of the
leaves, and spread out each pair of leaves as flatly as possible.

Damp some white blotting-paper by interleaving it with common white
pape