Contents  
  Front Matter
  I. What is Heredity?
  II. History of the Theory of Heredity.
  III. History of the Theory of Heredity (continued).
  IV. A New Theory of Heredity.
  V. On the Opinion That Each Sex May Transmit Any Characteristic Whatever.
  VI. The Evidence from Hybrids.
  VII. The Evidence from Variation.
  VIII. The Evidence from Secondary Sexual Characters.
  IX. The Evidence from Secondary Sexual Characters Continued - The Cause of the Excessive Modification of Male Characters..
  X. The Evidence from the Intellectual Differences Between Men and Women.
  XI. The Theory of Heredity Considered as Supplementary to the Theory of Natural Selection.
  XII. Recapitulation and Conclusion.
  Index