This publication forced Jean-François Champollion, the famous decoder of the Rosetta stone, to publish, prematurely, an "Introduction" to his L'Égypte sous les pharaons. Since both works concern the Coptic names of Egyptian towns, and Champollion's was published later, Champollion was accused by some of plagiarism. In fact "neither he nor Quatremère had copied from one another, and very obvious differences of approach were apparent in their publications".[3]