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Samuel Hahnemann (1755-1843), German physician and founder of homeopathy, the theory that an illness may be cured by administering minute doses of a drug which causes the same symptoms. The smaller the administered dose, the greater its effectiveness. In 1811, Hahnemann published his results in 'Homeopathic Materia Medica'. He used his methods with some success during a typhus epidemic in France in 1812. Although his results were criticised, homeopathy spread rapidly in the ensuing decades. Artwork from the 18th volume (second period of 1896) of the French popular science weekly 'La Science Illustree'.
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