FECHNER, G.TH.

Ueber den Ausgangswerth der kleinsten Abweichungssumme, dessen Bestimmung, Verwendung und Verallgemeinerung.

Leipzig, S. Hirzel, 1874. Small 4to. Orig. printed wrappers. (4),76 pp. Offprint from "Des XI. Bandes d. Abh. d. math.-phys. Classe d. Königl. Sächsischen Gesells. d. Wissensch. No. I" A few pencil underlinings, otherwise fine and clean.

First edition in the scarce offprint. Fechner is known as the founder of psychophysics, his theory of psycho-physical paralellism, as the first universal indeterminist and by the so-called "Fecnner-Weber Law". - Freud said:"I was always open to the Ideas of Fechner and have followed that thinker upon many importent points." (Freud, 1925 p. 86).

Order-nr.: 28831