[178] Vincent: Traité de Médecine légale de Légrand du Saule.
[179] W. Heinrich: Übersicht der Methoden bei Untersuchung der Farbenwahrnehmungen. Krakau 1900.
[180] Physiologie der Netshaut. Breslau 1865.
[181] J. O. Quantz: The Influence of the Color of Surfaces on our Estimation of their Magnitudes. Am. Journal of Psychology VII, 95.
[182] People of extreme old age do not seem to be able to hear shrill tones. A friend of mine reports this to be the case with the composer, Robert Frans.
[183] W. Wundt: Grundzüge.
[184] A. Strindberg: Zur Physiologie des Geschmacks. Wiener Rundschau, 1900. p. 338 ff.
[185] C. Lombroso and G. Ferrero. The Female Offender.
[186] E. H. Weber: Die Lehre vom Tastainn u. Gemeingefühl. Braunschweig 1851.
[187] Students who are members of student societies distinguished by particular colors.