APOLOGIA DE... Presbitero de Cartago, Contra Los Gentiles en Defensa de los Christianos: Traducida por el Illmo. Fr. D. Pedro Manero, Obispo de Tarazona, &c

spine : The outer portion of a book which covers the actual binding. The spine usually faces outward when a book is placed on a shelf. Also known as the back.

soiled : Generally refers to minor discoloration or staining.

4to : Or quarto. A term used generally to describe the approximate size of a book, a book that is about 10" to 12" tall and roughly squarish in shape. The term is based on the size of paper traditionally used by book printers which has been folded and cut into 16 pages.

vellum : A fine quality of parchment made from hide produced for binding or sometimes a writing surface. Sometimes used to describe paper which has been made to resemble true vellum.