INTRODUCTION
1. DARWIN’S THEORY OF NATURAL SELECTION: THE RE-
ACTION
DARWIN’S THEORY
THE REACTION

2. BACKGROUND TO THE CONFLICT BETWEEN MENDELIANS
AND BIOMETRICIANS
KARL PEARSON: A SKETCH OF HIS EARLY LIFE
WELDON, PEARSON, AND BIOMETRY
WILLIAM BATESON AND DISCONTINUOUS EVOLUTION
THE PUBLIC CONTROVERSIES

3. THE CONFLICT BETWEEN MENDELIANS AND BIOMETRI-
CIANS
THE HOMOTYPOSIS CONTROVERSY
THE MUTATION THEORY
INHERITANCE IN PEAS
HEREDITY IN MICE
MENDELISM AND BIOMETRY
MEETING OF THE BRITISH ASSOCIATION, 1904
COAT COLOR IN HORSES
THE EFFECTS OF THE CONFLICT

4. DARWINIAN SELECTION: THE CONTROVERSY, 1900-1918
THE ARGUMENT AGAINST DARWINIAN SELECTION
THE PROOF AND EXPLANATION OF THE EFFECTIVENESS
OF SELECTION

5. POPULATION GENETICS: THE SYNTHESIS OF MENDELISM,
DARWINISM, AND BIOMETRY
EXPLORATION OF THE MATHEMATICAL CONSEQUENCES
OF MENDELIAN HEREDITY BEFORE 1918
RONALD ALYMER FISHER
SEWALL WRIGHT
J.B.S. HALDANE
CONCLUSIONS
APPENDIX: GALTON, PEARSON, AND THE LAW OF ANCESTRAL
HEREDITY
BIBLIOGRAPHY
AFTERWORD
INDEX