Correction

COl\1MENTARIES I Readers' comments offeringsubstantial theoretical and practical contributions to issues that have been mised in textspublished in Leonardo are welcomed. The Editors reserve the right to edit and shorten letters. Letters should be writtenin English and sent to the Main Editorial Office. COMMENT ON REVIEW OF "KANDINSKY'S TEACHING AT THE BAUHAUS: COLOR THEORY AND ANALYTICAL DRAWING" Alan Lee, in his review of Clark V. Poling's book on Kandinsky's teaching at the Bauhaus (Leonardo 23, Nos. 2/3, 323-325, 1991) is certainly correct in criticizing Kandinsky and his followers for accepting Goethe's observations on color theory uncritically . But he himself is making the same mistake in accepting, equally uncritically, the remarks by Helmholtz and Hering on green as a primary color. What those two writers say about the phenomenal appearance of the color green is as purely subjective as Goethe's assertions. Their convictions are equally based on theories and on knowledge of optical and physiological facts, not on the perceptual qualities of color. e 19911SAST Pergamon Press pic.Printed inGreat Br~ain. 0024-(94)(,191 $3.00+0.00 I have had occasion to point out (Leonardo 20, No.2, 165-168, 1987) that the unanimous testimony of painters, all the way from Runge and Delacroix to Klee, confirms that the compositional functions of the color green in its relation to blue and yellow are incomprehensible unless the affinity of green as a secondary bridge between the two primaries, blue and yellow, is acknowledged. What is to be discussed and investigated here are perceptual facts, not assumed derivations from what is known or believed to be true in optics and physiology. Recently, the psychologist Osvaldo del Pos of the University of Padova has undertaken pertinent experiments designed to prove that green is a primary color. Such experiments need to be evaluated as to the particular conditions chosen, in comparison with the conditions faced by painters in their work. RUDOLF ARN1mM 1050 Wall Street, Apt. 6D Ann Arbor, Michigan 48105, U.S.A. CORRECTION Arthur L. Loeb's Art/Science Forum article "Symmetry of Structure: An Interdisciplinary Symposium, 13-19 August 1989" (Leonardo 23, Nos. 2/3, 1990, p. 322) contained a typographical error, resulting in a misattribution to one author and a failure to identify another author. The correct author names and titles of papers presented at the Symmetry of Structure symposium (Budapest, 1989) are as follows : Annegret Haake, "Symmetry and Tradition ofJavanese Batik Patterns "; William Huff, "That Unordinary Mirror-Rotation Symmetry". The editors of Leonardo regret this error and apologize for any inconvenience it may cause Arthur Loeb, Annegret Haake and William Huff. LEONARDO, Vol. 24, No.3., p. 371, 1991 371 ...