This volume presents a critical edition of the previously unpublished correspondence between Franz Brentano and Gustav Fechner along with a detailed introduction to provide context. A total of 11 letters (May to June 1974; October 1877 to January 1878) discuss in detail Brentano's critical arguments against Fechner's psychophysics in his Psychology from an Empirical Standpoint (1874).

Mauro Antonelli, Universität Milano-Bicocca und Unversität Graz.