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1
1036
Enquire within upon everything
·
Robert Kemp Philp
856
The
"graph"
process
usually
consists
of
transferring
a
writing
made
in
an
aniline
dye
on
to
a
gelatine
surface,
from
which,
by
the
application
of
successive
sheets
of
paper,
subjected
to
a
smoothing
pressure
by
the
hand,
a
number
of
copies
may
be
obtained,
in
a
manner
very
similar
to
the
ordinary
lithographic
process.
All
those
which
may
be
classed
as
"gelatine
transfer"
processes
are,
however,
open
to
the
objection
that,
after
a
certain
number
of
copies,
the
colour
grows
very
faint.
Some
other
methods
of
manifold
writing,
such
es
the
Edison,
the
Trypograph,
the
Cyclostyle,
&c.
(by
which
1,000
copies
can
be
taken
from
one
writing),
do
not
possess
this
fault,
being
based
on
a
principle
of
a
fine
stencil
on
prepared
paper,
and
squeezing
ink
through
the
minute
perforations
on
to
a
sheet
of
paper
fixed
underneath.
The
writing
in
these
stencil
systems,
however,
has
a
"dotty"
and
broken
appearance,
displeasing
to
many
eyes--the
Cyclostyle
being,
perhaps,
least
faulty
in
this
respect.
For
those
who
would
like
to
make
a
gelatine
"graph,"
we
append
the
following
recipe:
Six
parts
by
weight
of
pure
glycerine,
four
parts
by
weight
of
water,
two
parts
of
barium
sulphate,
and
one
part
of
sugar.
Mix
them,
and
let
them
soak
for
twenty-four
hours;
then
melt
at
a
gentle
heat,
stir
until
thoroughly
mixed,
and
pour
the
composition
into
a
tray.
Any
chemist
will
supply
an
aniline
dye
for
the
ink.
[Footnote
1:
Both
these
sections
were
numbered
2486
in
the
original
text.
txt
Ed.]
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