[A single "principle" question: Gisela Fluss and Ichthyosaura. A marginal note on Freud's early letters]

Freud's biographers have hitherto proceeded on the assumption that his youthful love Gisela Fluss and the figure of "Ichthyosaura" that makes its appearance in his correspondence of the same period were one and the same person. The author demonstrates that they must in fact have been two different women.