Recherches sur Diderot et sur l'Encyclopédie - Année 1989 - Volume 7 - Numéro 1 - Pages 51-70Roselyne Rey : Mental Pathology in the Encyclopédie : Definitions and Classification. The Encyclopédie articles on mental illness are compared to those in contemporary reference works, from Chambers' Cyclopœdia in 1742 to the edition of 1781-6. On the one hand greater medicalisation was accompagnied by a limitation of vocabulary. At the same time, the Encyclopédie simplifies and introduces greater coherence in the classification of diseases. Particularly interesting is the greater importance placed on the explanation of mental illness by reference to the nervous system after vol. VIII ; this corresponds to the replacement of Arnulphe D'Aumont by the vitalist Ménuret de Chambaud as author of the articles. 20 pages Source : Persée ; Ministère de la jeunesse, de l’éducation nationale et de la recherche, Direction de l’enseignement supérieur, Sous-direction des bibliothèques et de la documentation.