This little book is intended to meet the demand of the ever-increasing number of visitors of the churches and picture galleries, at home and abroad, who, with little knowledge of Christian hagiology, or the ecclesiastical history of the Middle Ages, wish to know more of the subjects represented in the works of art they see than is given in ordinary catalogues and guide-books. Many of the incidents frequently depicted, and many of the attributes given to the saints, are, for want of knowledge of the legends to which reference is made, to some extent unintelligible.