Vlll CONTENTS. 



CHAPTER PAGE 



XIII. CANON TRISTAM THE FIRST PUBLICLY TO ACCEPT 



THE THEORY OF NATURAL SELECTION (1859) . 92 



XIV. THE PREPARATION OF THE " ORIGIN OF SPECIES " 



(1858-59) 95 



XV. THE ORIGIN OF SPECIES (1859) 100 



XVL THE INFLUENCE OF DARWIN UPON LYELL (1859-64). 105 



XVII. INFLUENCE OF DARWIN UPON HOOKER AND ASA GRAY 

 NATURAL SELECTION AND DESIGN IN NATURE 

 (1860-68) Ill 



XVIII. INFLUENCE OF DARWIN UPON HUXLEY . . .119 



XIX. THE DIFFICULTY WITH WHICH THE " ORIGIN " WAS 



UNDERSTOOD 144 



XX. THE DIFFICULTY WITH WHICH THE " ORIGIN " WAS 

 UNDERSTOOD (continued] VIEWS ON SPONTANEOUS 

 GENERATION . . . . . . . .153 



XXI. VARIATION OF ANIMALS AND PLANTS UNDER DOMES- 

 TICATION : PANGENESIS (1868) .... 161 



XXII. PANGENESIS AND CONTINUITY OF THE GERM-PLASM : 



DARWIN'S CONFIDENCE IN PANGENESIS . . .178 



XXIII. DESCENT OF MAN EXPRESSION OF EMOTIONS 



EARTH-WORMS (1871-81) 186 



XXIV. BOTANICAL WORKS (1862-86) 193 



XXV. LETTERS FROM DARWIN TO PROFESSOR MELDOLA 



(1871-82) 199 



XXVI. His LAST ILLNESS (1882) 219 



INDEX 221 



