TABLE OF CONTENTS 



PAGE 



List of Illustrations xv-xviii 



j PART I. INTRODUCTORY AND HISTORICAL 



/^-Chapter I. Introduction 3 



What Organic Evolution Is — Definitions 3 



The Modern Attitude as to the Truth of the Evolution Doctrine . 5 



What Organic Evolution Is Not 8 



Chapter II. Historical Account of the Development of the 



Evolution Theory. E.E.N 10 ^ 



Evolution among the Greeks 11 



Post-Aristotelians 14 



The Early Theologians 14 



The Revival of Science 15 



The Great Naturalists of the Eighteenth Century 16 



Lamarck 18 \^ 



Cuvier and GeofTroy St. Hilaire 21 



Catastrophism and Uniformitarianism 22 



The Reawakening of the Evolution Idea ^i:^Z~ 



Charles Darwin 24 



Summary of Darwin's Theories 25 



Contemporary Opinion Regarding the Validity of Darwin's Views 27 



Isolation Theories 32 



Orthogenesis Theories 2)2> 



Mutation or Heterogenesis Theories 36 



The Rise and Vogue of Biometry 38 



Modern Experimental Evolution 39 



Mendel's Laws 41 



Hybridization and the Origin of Species 43 



Neo-Mendelian Developments 43 



, Heredity and Sex 44 



I/Xhapter III. The Relation of Evolution to Materialism. 



Joseph Le Conte ~"^. . 46 



PART II. EVIDENCES OF ORGANIC EVOLUTION 



Chapter IV. Is Organic Evolution an Established Principle ? 



E.E.N 57 



"--^ Chapter V. Evidences from Palaeontology 61 



Strength and Weakness of the Evidence 61 



ix 



U 



