In psychoanalytical treatment it is very important to be prepared for the bisexual significance of a symptom. It should not be at all surprising or misleading when a symptom remains apparently undiminished in spite of the fact that one of its sexual determinants is already solved. Perhaps it is still supported by the unsuspected contrary sexual. Furthermore, during the treatment of such cases we can observe how the patient makes use of this convenience. During the analysis of the one sexual significance he continually switches his thoughts into the sphere of the contrary significance just as if onto a neighboring track. ----- Footnote 1: Studien über Hysterie von Jos. Breuer und Sigm. Freud. Leipzig und Wien, Franz Deuticke, 1895. 2nd ed., 1909. Footnote 2: Sammlung kleiner Schriften zur Neurosenlehre, Vols. I. and II. Leipzig und Wien, Deuticke, 1906, and 1909. Footnote 3: Bleuler, Freudsche Mechanismen in der Symptomatologie der Psychosen, Psychiatrisch-Neurolog. Wochenschrift, 1906, Nrs. 35 and 36. Footnote 4: Jung, The Psychology of Dementia Præcox, Nervous and Mental Disease Monograph Series, Nr. 3. Footnote 5: Riklin, Psychiatrisch-Neurolog. Wochenschrift, 1905, Nr. 46. Footnote 6: Brill, Psychological Factors in Dementia Præcox, Journal of Abnormal Psychology, Vol. III, Nr. 4, and A Case of Schizophrenia, American Journal of Insanity, Vol. LXVI, No. 1. Footnote 7: Freud, Deuticke, 1909. Footnote 8: Freud, Karger, 1907. Footnote 9: Freud, Deuticke, 1905. Footnote 10: Written in collaboration with Dr. Joseph Breuer. Footnote 11: The possibility of such a therapy was clearly recognized by Delboeuf and Binet, as is shown by the accompanying quotations: Delboeuf, Le magnétisme animal, Paris, 1889: “On s’expliquerait des lors comment le magnétiseur aide à guérison. Il remet le sujet dans l’état où le mal s’est manifesté et combat par la parole le même mal, mais renaissant.” (Binet, Les altérations de la personnalité, 1892, p. 243): “... peut-être verra-t-on qu’en reportant le malade par un artifice mental, au moment même ou le symptome a apparu pour la premiere fois, on rend ce malade plus docile a une suggestion curative.” In the interesting book of Janet, L’Automatism Psychologique, Paris, 1889, we find the description of a cure brought about in a hysterical girl by a process similar to our method. Footnote 12: We are unable to distinguish in this preliminary contribution what there is new in this content and what can be found in such other authors as Moebius and Strümpel who present similar views on hysteria. The greatest similarity to our theoretical and therapeutical accomplishments we accidentally found in some published observations of Benedict which we shall discuss hereafter. Footnote 13: