2 volumes in 1. xvi, 390; [2], 99 pp. Title page printed in red & black, with woodcut printer's device. Engraved frontispiece portrait of the author by F. de Grado. (4to) 23.5x17.5 cm (9¼x6¾"), period vellum, inked spine title.
A key work by the Italian Jesuit ascetical writer Giovanni Battista Scaramelli (1687-1752), being a handbook of mystical theology. Old owner's inscription to title page dated 1781.