Section.—Part of book made from one folded sheet of paper.
Sewing All Along.—Method of sewing a book with kettlestitches and without tapes or cords. Fig. 14.
Sewing Frame.—Frame on which the books are sewed. No. 6, Plate I.
Signature.—Small figure or letter at the bottom of the first page of a section to indicate the order of the sections.
Slips.—The tapes, super, and endpaper pasted together to insert in the double boards of a Library Binding. a, Fig. 23.
Spacer.—A device for determining the position of boards in casebinding, instead of measuring. This is used only where a number of the same kind of books are being bound uniformly.
Split Boards.—In the Library Binding, Split Boards are sometimes used instead of double boards. These are simply single boards split at one edge for the insertion of the slips.
Squares.—The distance the boards project beyond the edge of the book.
Stab Sewing.—Where books are sewed from side to side through holes punched with an awl. Fig. 40.
Sunken Cords.—Where book is sewed on cords sunken into large depressions sawed across the back. Fig. 32.