CONTENTS 



PAGE 



I. FIFTY YEARS OF DARWINISM (Baltimore, Jan. 1, 



1909) . . V . . . . . 1 



II. THE PERSONALITY OF CHARLES DARWIN (Balti- 

 more, Jan. 1, 1909) 57 



III. THE DARWIN CENTENARY AT OXFORD (Feb. 12, 



1909) 78 



IV. CHARLES DARWIN AND THE UNIVERSITY OF CAM- 



BRIDGE (Cambridge, June 23, 1909) . . 84 



V. THE VALUE OF COLOUR IN THE STRUGGLE FOR LIFE 92 



VI. MIMICRY IN THE BUTTERFLIES OF NORTH AMERICA 



(Baltimore, Dec. 31, 1908) . . . .144 



VII. LETTERS FROM CHARLES DARWIN TO KOLAND 



TRIMEN (1863-71) . . .. ' . .213 



APPENDIX A. CHARLES DARWIN AND THE HYPO- 

 THESIS OF MULTIPLE ORIGINS . . .247 



APPENDIX B. DARWIN AND EVOLUTION BY MU- 

 TATION . . . . . * . . 254 



APPENDIX C. FURTHER PROOF THAT SCIENTIFIC 



WORK WAS NECESSARY FOR DARWIN . . 256 



APPENDIX D. DE VRIES'S 'FLUCTUATIONS' HERE- 

 DITARY ACCORDING TO DE VfilES, NON-TRANS- 

 MISSIBLE ACCORDING TO BATESON AND 

 PUNNETT 258 



INDEX , 281 



