The secrets revealed are divided into five distinct parts:
-- Of the Virtues of Herbs -- Describes 23 herbs, their magical, astrological, and medicinal properties, as well as preparations and recipes.
-- Of the Virtues of Stones -- Presents 45 entries from the lapidary of Albertus Magnus, Mineralia, listed by their particular effect or specific magical property.
-- Of the Virtues of Beasts -- Lists 18 animals, their natural powers, and their use in performing magical feats.
-- Of the Planets -- A treatise on the hours of the day governed by the various planets, and a discussion of their astrological qualities.
-- The Marvels of the World -- A theoretical discussion of magic emphasizing the necessity of experiment, followed by a large number of recipes from various sources.

This edition features an in-depth introduction by scholars Michael R. Best and Frank H. Brightman outlining the history of the text, its historical/cultural context, and the variant manuscripts sourced. It is aninvaluable study for students of the history of Western magic, and those interested in the evolution of printed works through the ages. Includes a list of works cited, a collation of the different editions and manuscripts, and an index.