CONTENTS. 



PART I. 



PAGE 



Pioneers of Evolution from Thales to Lucretius^ 



B. C. 60O^A. D. 50 . . . . .1 



PART II. 

 The Arrest of Inquiry — a. d. 50-A. d. 1600. 



1. From the Early Christian Period to the time 



of Augustine — A. d. 50-A. d. 400 . . 37 



2. From Augustine to Lord Bacon — a. d. 400- 



A. d. 1600 ...... 73 



PART III. 

 The Renascence of Science — A. d. 1600 onward . gg 



PART IV. 

 Modern Evolution — 



1. Darwin and Wallace . . . .126 



2. Herbert Spencer . . . . . i75 



3. Thomas Henry Huxley . . . .201 



Index ....... 267 



vii 



