Imperfections. In commercial binderies, sheets rejected because imperfect.

In boards. 1. Term used when books are cut after boards have been attached. 2. Style of binding which has a very narrow cloth back and paper covered sides.

In print. Obtainable from the publishers.

India-rubbered. When the backs of books consisting of single leaves are covered with a solution of india rubber instead of being sewed they are said to be India-rubbered. Not practicable for permanent bindings.

Inlaid. The cover of a book bound in leather in which leather of a different kind or color has been inlaid.

In quires. Unbound books in sheets.

Inset. A folded sheet laid inside of another.

In sheets. A book is said to be in sheets before it has been bound, whether the sheets are folded or not.

Inside margin. The border made by the turned-in leather on the inside face of the boards.

Inside tins. Sheets of tin sometimes placed in books which are to receive heavy pressure.