The last of the great Enlightenment encyclopedias, Charles Joseph Panckoucke's Encyclop die m thodique was originally conceived as an innovative revision of the Encyclop die and the Suppl ment. Arranged in a series of subject-specific dictionaries, it began to appear in 1782 and was completed 50 years later, boasting 203 volumes of text and plates produced by many eminent editors and contributors. Kathleen Hardesty Doig's book is the first to compare the genealogy of the M thodique with its predecessors as a means to understanding Panchoucke's original vision for his work. Through careful examination of each volume of the M thodique, the author explores for instance: