Frederick Burkhardt and Sydney Smith, Eds. The correspondence of charles darwin Volume 2:1837–1843. Cambridge and New York: Cambridge University Press, 1986. 603 pp. $37.50 (cloth). Paul H. Barrett, Donald J. Weinshank, Paul Ruhlen, Stephan J. Ozminski, and Barbara N. Berghage, Eds. A Concordance to Darwin's The Expression of the Emotions of Man and Animals. Ithaca, N.Y.: Cornell University Press, 1986. 528 pp. $45.00 (cloth) (Reviewed by Craig Stillwell)