When a sheet of paper of Medium or larger size is folded in two leaves,
like most newspapers, it is called a _folio_; when folded in four leaves,
it is named a _quarto_ or _4to_; when folded in eight leaves, an _octavo_
or _8vo_; in twelve leaves, a _duodecimo_ or _12mo_; in sixteen leaves,
_sextodecimo_ or _16mo_; in eighteen leaves, _octodecimo_ or _18mo_; in
twenty-four leaves, _vigesimo-quarto_, or _24mo_, and so on. The Latin
names beyond _duodecimo_ are seldom used.
[Illustration]
[Illustration: Abstract Title-Deeds of Estates.
Abstract Title-Deeds of Estates are printed with blanks at
the back, with all the margin on the left side, and on single
leaves, which are stitched together at the corner.
This method of imposing the form is to save presswork and the
compositor’s charge.]
[Illustration: A Single Sheet of Folio.]
[Illustration: Two Sheets of Folio, Quired, or lying one in another.
_=Outer Form of the Outer Sheet.=_
_=Outer Form of the Inner Sheet.=_
Imposing in quires may be carried to any extent, by observing the
following rule:—first ascertain the number of pages, then divide them
into so many sheets of folio, and commence laying down the first two
and last two, which form the first sheet, and so on to the centre one,
always remembering that the odd pages stand on the left and the even on
the right; the folios of each two forming one more than the number of
pages in the work: for example, let us suppose the work to consist of
thirty-six pages, which is nine sheets of folio, then they should be laid
down according to the scheme at the foot of the opposite page.]
[Illustration: Two Sheets of Folio, Quired, or lying one in another.
_=Inner Form of the Outer Sheet.=_
_=Inner Form of the Inner Sheet.=_
Outer. Inner. Sheet.
1 36 35 2, _1st_
3 34 33 4, _2d_
5 32 31 6, _3d_
7 30 29 8, _4th_
9 28 27 10, _5th_
11 26 25 12, _6th_
13 24 23 14, _7th_
15 22 21 16, _8th_
17 20 19 18, _9th_
The furniture must be reduced in the backs of the inner sheets, to allow
for stitching.]
[Illustration: A Sheet of Common Quarto.
_=Outer Form.=_]
[Illustration: A Sheet of Quarto, the Broad Way, commonly used in Works
of Music.
_=Outer Form.=_]
[Illustration: A Sheet of Common Quarto.
_=Inner Form.=_]
[Illustration: A Sheet of Quarto, the Broad Way, commonly used in Works
of Music.
_=Inner Form.=_]
[Illustration: Two Half-Sheets of Quarto, worked together.
_=Outer Form.=_]
[Illustration: Half a Sheet of Common Quarto.]
[Illustration: Two Half-Sheets of Quarto, worked together.
_=Inner Form.=_]
[Illustration: Half a Sheet of Quarto, the Broad Way.]
[Illustration: Outer Form of a Sheet of Common Octavo.]
[Illustration: Outer Form of a Sheet of Octavo, the Broad Way.]
[Illustration: Inner Form of a Sheet of Common Octavo.]
[Illustration: Inner Form of a Sheet of Octavo, the Broad Way.]
[Illustration: Outer Form of Two Half-Sheets of Common Octavo, worked
together.]
[Illustration: Half a Sheet of Common Octavo.]
[Illustration: Inner Form of Two Half-Sheets of Common Octavo, worked
together.]
[Illustration: Two Quarters of a Sheet of Octavo, worked together.]
[Illustration: Outer Form of a Sheet of Octavo, 12 of the Work, and 4 of
other Matter.]
[Illustration: Outer Form of a Sheet of Octavo, of Hebrew Work.]
[Illustration: Inner Form of a Sheet of Octavo, 12 of the Work, and 4 of
other Matter.]
[Illustration: Inner Form of a Sheet of Octavo, of Hebrew Work.]
[Illustration: Outer Form of a Sheet of Octavo, Imposed from the Centre.]
[Illustration: A Half-Sheet of Octavo, Imposed from the Centre.]
[Illustration: Inner Form of a Sheet of Octavo, Imposed from the Centre.]
[Illustration: Two Quarters of a Sheet of Octavo, Imposed from the
Centre.]
[Illustration: Outer Form of a Sheet of Twelves.]
[Illustration: Inner Form of a Sheet of Twelves.]
[Illustration: A Sheet of Twelves, without cutting.
_=Outer Form.=_
_=Inner Form.=_]
[Illustration: A Sheet of Twelves, with Two Signatures.
_=Outer Form.=_
_=Inner Form.=_]
[Illustration: A Common Half-Sheet of Twelves.]
[Illustration: Half-Sheet of Twelves, without cutting.]
[Illustration: Different Methods of Imposing Half-Sheets of Twelves, from
the Centre.]
[Illustration: A Sheet of Twelves, Imposed from the Centre.]
[Illustration: Outer Form of a Sheet of Long Twelves.]
[Illustration: One-third, or 8 pages, of a Sheet of Twelves.
To be imposed as a slip, or in the off-cross.
_=Outer Form.=_]
[Illustration: Inner Form of a Sheet of Long Twelves.]
[Illustration: One-third, or 8 pages, of a Sheet of Twelves.
To be imposed as a slip, or in the off-cross.
_=Inner Form.=_]
[Illustration: Two Half-Sheets of Twelves, worked together.
_=Outer Form.=_
_=Inner Form.=_]
[Illustration: Half-Sheet of Twelves, with 2 Signatures. 4 pages of other
matter.]
[Illustration: A Half-Sheet of Sixteens.]
[Illustration: A Sheet of Sixteens, with One Signature.
_=Outer Form.=_
_=Inner Form.=_]
[Illustration: A Half-Sheet of Eighteens.
Containing 16 pages.
The white paper of this half-sheet being worked off, the centre
pages must be transposed,—viz. pages 7 and 10 in the room of 9 and
8, and pages 9 and 8 in the place of 7 and 10: when this is done,
your imposition will be true.]
[Illustration: A Half-Sheet of Eighteens.
When the white paper is worked off, transpose the form,—viz. pages
11 and 8 in the room of 7 and 12, and pages 7 and 12 in the place
of 11 and 8: this being done, the sheet will then fold up right.]
[Illustration: Outer Form of a Sheet of Eighteens, to be folded
together.]
[Illustration: Outer Form of a Sheet of Eighteens, with One Signature.]
[Illustration: Inner Form of a Sheet of Eighteens, to be folded
together.]
[Illustration: Inner Form of a Sheet of Eighteens, with One Signature.]
[Illustration: Outer Form of a Sheet of Eighteens, with Two Signatures.]
[Illustration: Outer Form of a Sheet of Eighteens, with Three Signatures.]
[Illustration: Inner Form of a Sheet of Eighteens, with Two Signatures.]
[Illustration: Inner Form of a Sheet of Eighteens, with Three Signatures.]
[Illustration: A Half-Sheet of Eighteens, without Transposition.
This mode of imposition is very objectionable, as there will be,
when the paper is cut up, three single leaves.]
[Illustration: A Half-Sheet of Twenties, with Two Signatures.]
[Illustration: Inner Form of a Sheet of Twenties.]
[Illustration: Outer Form of a Sheet of Twenties.]
[Illustration: A Half-Sheet of Twenty-Fours.]
[Illustration: Outer Form of a Sheet of Twenty-Fours, with Two
Signatures.]
[Illustration: A Half-Sheet of Twenty-Fours, the Sixteen-way.]
[Illustration: Inner Form of a Sheet of Twenty-Fours, with Two
Signatures.]
[Illustration: A Half-Sheet of Twenty-Fours, without Inset.]
[Illustration: A Half-Sheet of Twenty-Fours, without Inset.]
[Illustration: A Half-Sheet of Twenty-Fours, without Cutting.]
[Illustration: A Half-Sheet of Thirty-Twos.]
[Illustration: Outer Form of a Sheet of Thirty-Twos.]
[Illustration: Outer Form of a Sheet of Thirty-Twos, with Four
Signatures.]
[Illustration: Inner Form of a Sheet of Thirty-Twos.]
[Illustration: Inner Form of a Sheet of Thirty-Twos, with Four
Signatures.]
[Illustration: A Half-Sheet of Thirty-Twos, with Two Signatures.]
[Illustration: A Half-Sheet of Thirty-Twos, 20 pages of the Work, 4 pages
of Title, &c., and 8 of other Matter.]
[Illustration: A Half-Sheet of Thirty-Sixes.]
[Illustration: A Half-Sheet of Thirty-Sixes, without Cutting.]
[Illustration: A Half-Sheet of Thirty-Sixes, with Two Signatures.]
[Illustration: A Half-Sheet of Forties.]
[Illustration: A Quarter-Sheet of Forty-Eights, with Two Signatures.]
[Illustration: A Half-Sheet of Forty-Eights, with Two Signatures.]
[Illustration: A Quarter-Sheet of Forty-Eights, without Cutting.]
[Illustration: A Half-Sheet of Forty-Eights, with Three Signatures.]
[Illustration: A Common Quarter-Sheet of Forty-Eights.]
[Illustration: A Quarter-Sheet of Sixty-Fours, with Two Signatures.]
[Illustration: A Common Quarter-Sheet of Sixty-Fours.]
[Illustration: A Quarter-Sheet of Sixty-Fours, 20 pages of the Work, 8 of
Title, and 4 of other Matter.]
[Illustration: A Half-Sheet of Sixty-Fours.]
[Illustration: A Half-Sheet of Seventy-Twos, with Three Signatures.]
[Illustration: A Half-Sheet of Ninety-Sixes, with Six Signatures.]
[Illustration: A Half-Sheet of One Hundred and Twenty-Eights, with Eight
Signatures.]
[Illustration]