The purpose of this department is to facilitate the communication of research topics in the history and philosophy of logic. Contributions should be written up in a coherent form (rather than as rough notes, say) and with detailed references, in order to facilitate their appraisal. Especially welcome are answers or addenda to material already published in the department. Requests to publish contributions in the form submitted will be honoured as far as possible, but rewriting may be needed (in the light of other contributions which overlap, for example, and in conformity with house style). The proposed published version of a contribution will be sent to its author before publication, where his work will be acknowledged. Contributions should be sent to the editor of the department: J. Corcoran, Department of Philosophy, State University of New York at Buffalo, Buffalo, New York 14260, USA., who has prepared all the material for this first edition.