Thrown out. Folded maps or diagrams which are likely to be used a great deal can be mounted on cloth guards the width of the book. When opened they will be entirely outside the book and are said to be thrown out.

Tight back. A book on which the covering material is glued to the back. See page 44.

Title. Space between the bands upon which the title is lettered.

Title skiver. Very thin skiver used as labels on which to gild lettering.

Titled. See Pieced.

Tooling. The decoration of leather made by stamping designs in gold leaf upon it.

Tools. Brass stamps used in tooling.

Top gilt. Indicates that only the top edge of the book is gilded.

Tree calf. Imitation of the trunk and branches of a tree made with acid on the sides of a book bound in full calf.

Trimmed. 1. Books which have only the edges of projecting leaves, not the folds, cut off are said to be trimmed. 2. In library binding the term generally means that all edges have been trimmed even.