J. Eklund, A. Bond, J. Alden, and R.G. Compton, Perspectives in Modern Voltammetry. J. Wolff and R. Wortmann, Organic Materials for Nonlinear Optics. T. Sugawara, Tautomerism in the Solid State. Y. Tsuno and M. Fujio, The Tukawa-Tsuno Relationship in Carbocationic Systems. Subject Index.