Elemente der Psychophysik. 2 vols.

The first treatise on the subject. Fechner applied the laws of mathematical physics to the physiology of sensation. He discussed the functional relations of the dependence between mind and body and investigated the cutaneous and muscular senses. Translated into English by Helmut E. Adler as Elements of psychophysics. New York: Holt, Rinhart & Winston, 1966. See also No. 1464.