<p>In this illuminating volume, Rodrigo Barahona takes up the question of transformations in hallucinosis in Wilfred Bion¿s work.</p><p>The book discusses how the analyst¿s functioning, his receptivity and ability to make sense out of what is unconsciously occurring between himself and the patient, and the ability to find words to represent it ¿ the basic psychoanalytic task ¿ is enhanced when the distinction between two basic types of transformations in hallucinosis can be borne in mind: transformations in positive hallucinosis and transformations in negative hallucinosis. In the the psychoanalytic literature, this distinction has not been formally established, with the general term ¿transformations in hallucinosis¿ used for both processes. This book cuts a clearer distinction between the two, describing their distinct though overlapping metapsychologies, and charts the clinical implications. In making these distinctions, the book draws on Andr¿reen¿s work, arguing for a continuity be