Illustration found in an Australian cave. Although it was in a primitive period, a person's feelings was intended to be represented by means of a drawing. Wundt, W. (1919). Voelkerpsychologie: eine Untersuchung der Entwicklungsgesetze von Sprache, Mythus und Sitte. Die Kunst. Dritte neubearbeitete Auflage. Leibzig: Alfred Kroener Verlag. http://en.wikipedia.org/wiki/Wilhelm_Wundt art australia cave illustration Australian Cave Illustration
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Jung, C. G. (1944). Psychologie und Alchemie. Zuerich: Rascher Verlag. http://en.wikipedia.org/wiki/Carl_Jung alchemy early psychology Praying Prior to Experiment (1677)
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