CONTENTS 



CHAPTER PAGE 



I. THE SECRET OF DARWIN'S GREATNESS .... 9 

 II. BOYHOOD EDINBURGH CAMBRIDGE (1817-31) . . 16 



HI._VOYAGE OF THE "BEAGLE" (1831-36) .... 21 



IV. CAMBRIDGE LONDON WORK UPON THE COLLECTIONS 

 MARRIAGE GEOLOGICAL WORK JOURNAL OF 

 THE VOYAGE CORAL REEFS FIRST RECORDED 

 THOUGHTS ON EVOLUTION (1837-42) . . . 25 



V. DOWN GEOLOGY OF THE VOYAGE WORK ON CIR- 



RIPEDES (1842-54) 35 



VI. THE GROWTH OF THE "ORIGIN OF SPECIES" (1837-58) 42 



VII. GROWTH OF THE " ORIGIN " (continued) CORRESPOND- 

 ENCE WITH FRIENDS ...... 50 



VIII. DARWIN AND WALLACE (1858) 60 



IX. DARWIN'S SECTION OF THE JOINT MEMOIR READ 



BEFORE THE LlNNEAN SOCIETY JULY 1, 1858 . 65 



X. WALLACE'S SECTION OF THE JOINT MEMOIR READ 



BEFORE THE LlNNEAN SOCIETY JULY 1, 1858 . 71 



XL COMPARISON OF DARWIN'S AND WALLACE'S SECTIONS 

 OF THE JOINT MEMOIR RECEPTION OF THEIR 

 VIEWS THEIR FRIENDSHIP 78 



XII. THE GROWTH OP WALLACE'S CONVICTIONS ON EVOLU- 

 TION AND DISCOVERY OF NATURAL SELECTION 

 BORNEO 1855 TERNATE 1858 . 87 



