Iwan Bloch (1872-1922), the “father of sexology”, was a Berlin dermatologist. His many socio-cultural studies in sexology earned him an international reputation as a medical historian. He also discovered the Marquis de Sade‘s manuscript of the “120 days of Sodom” in 1904, which had been believed to be lost. He often published his more controversial works under the pseudonym of Eugène Dühren.

  • A Complete Encyclopaedia of the Sexual Sciences, Dr. Iwan Bloch, trans Dr. M. Eden Paul (Falstaff Press, New York, 1937) 8.75" X 5.75", xxx+790pp, hardbound, no DJ, decorative red cloth with gilt lettering and decorations. The 30 pages of the preface printed in black with red decorations (mostly praise of the book and the author by various people including Dr. Bloch). Good condition, corners bumped, some fading/spotting on cover and spine, binding very good. "The author's aim in writing this book was to write a complete Encyclopaedia on the sexual sciences, and it will probably be acknowledged by all who study its pages that the author has accomplished his intention in a very scholarly manner, and in such form as to be of great value to the professions for whom this translation is intended. The subject is no doubt one which appeals to and affects the interests of all adult persons, but the publishers have, after very serious and careful consideration, come to the conclusion that the sale of the English translation of the book shall be limited to members of the legal and medical professions." -from Publisher's Note
  • Marquis de Sade | The Man and His Age | studies in the history of the culture and morals of the eighteenth century, Dr. Iwan Bloch, translated by James Bruce (Julian Press, 1931, [first american edition]) 6 .5"x9.5", 296pp, hardbound, black boards, red and gilt title on spine, some bumps and wear, good condition for age. Iwan Bloch (1872-1922), the “father of sexology”, was a Berlin dermatologist. His many socio-cultural studies in sexology earned him an international reputation as a medical historian. He also discovered de Sade’s manuscript of the “120 days of Sodom” in 1904, which had been believed to be lost. Together with Magnus Hirschfeld and Albert Eulenburg, Bloch proposed the new concept of a science of sexuality: Sexualwissenschaft or sexology. In 1906 he wrote Das Sexualleben unserer Zeit in seinen Beziehungen zur modernen Kultur [The Sexual Life of our Time in its Relations to Modern Civilization], a complete encyclopedia of the sexual sciences in their relation to modern civilization. According to Sigmund Freud, Bloch's studies were instrumental in the development of the anthropological approach to the theory of sexuality. For example, before Bloch, homosexuality was analyzed using a pathological approach.
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