CONTENTS OF VOL. I. 



PAGE 



List of Plates ... ... ... ... ... ... xiv 



List of Woodcuts ... ... ... ... ... xv 



List of Genetic Tables ... ... ... ... ... xviii 



Preface to the First Edition ... ... ... xix 



Preface to the Third Edition ... ... ... ... xxvil 



Prometheus ... ... ... ... ... xxxvii 



Faust ... ... ... ... xxxvii 



CHAPTER I. 

 THE FUNDAMENTAL LAW OF THE EVOLUTION OF ORGANISMS. 



General Significance of the History of the Evolution of Man. Ignor- 

 ance of it among the so-called Educated Classes. The Two 

 Branches of the History of Evolution. Ontogeny, or the History 

 of Germs (Embryos), and Phylogeny, or the History of Descent (or 

 of the Tribes). Causal Connection between the Two Series of 

 Evolution. The Evolution of the Tribe determines the Evolution 

 of the Germ. Ontogeny as an Epitome or Recapitulation of Phy. 

 logeny. The Incompleteness of this Epitome. The Fundamental 

 Law of Biogeny. Heredity and Adaptation are the two Formative 

 Functions, or the two Mechanical Causes, of Evolution. Absence 

 of Purposive Causes. Validity of Mechanical Causes only. Sub- 

 stitntion of the Monistic or Unitary for the Dnalistic or Binary 

 Cosmology. Radical Importance of the Facts of Embryology to 

 Monistic Philosophy. Palingenesis, or Derived History, and Keno- 

 genesis, or Vitiated History. History of the Evolution of Forms 

 and Functions. Necessary Connection between Physiogeny and 



