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.