Dentelle border. A tooled pointed border with finely dotted or Gascon ornaments in imitation of lace.

Derome style. This style has ornaments of a leafy character, with a more solid face, though lightly shaded by the graver. The ornaments are often styled Renaissance, being an entire change from the Gascon. The Derome is best exemplified in borders, Vandyke in design; it is simple in construction but rich in effect, and is appropriate for art publications. Time, eighteenth century.

Diaper. A term applied to a small repeating all-over pattern. From woven material decorated in this way.

Divinity calf. A dark brown calf bookbinding decorated with blind stamping, and without gilding; so called because formerly used in binding theological books.

Divinity edges. See Circuit edges.

Double. See Doublure.

Doublure. The inside face of the boards, especially applied to them when lined with leather and decorated. When thus lined a cover is said to be “double.”

Duck, sometimes called Canvas. This is made by many firms in a wide range of colors and qualities. It is in fact a heavy cotton cloth. Slate-colored duck 28 in. wide, 10 oz. to the yard, costs about 20 cents per yard. This is a firmly woven, smooth material. We have used a light green. It takes printers’ ink for lettering fairly well, though it soon soils if handled. It is a very desirable binding for heavy books not much used. All such books should be stiffened by pasting or gluing cloth on the backs, if loose back, and should be reinforced at head and tail.

Dutch metal. An imitation of gold leaf, sometimes used on cheap bindings. It soon grows dark or tarnishes.