LIST OF ILLUSTRATIONS 



PORTRAITS 



CHARLES DARWIN - Frontispiece 



FRANCIS GALTON To face page 73 



HUGO DE VRIES ,, 113 



JOSEPH GOTTLIEB KOLREUTER - 148 



GREGOR JOHANN MENDEL ,, 163 



DIAGRAMS 



Fig. i - 



Fig. 2 - 



Fig. 3 - 



Fig. 4 - 



Fig. 5 - 



Figs. 6 and 7 



Fig. 8 - 



Fig. 9 - 



Fig. 10 - 



Fig. ii - 



Fig. 12. Mutation in 



(Enothera - To face 

 Fig. 13. Trifolium Pra- 



tense Quinquefolium 

 To face 



PAGE 



68 



77 

 80 

 82 

 83 

 87 

 89 

 96 

 119 



136 



143 



Fig. 14. Mendelian Pro- 

 portions in Maize 



To face 175 

 Fig. 15. Inheritance in 



Primula -To face 183 



Fig. 16 - - 199 



Figs. 17 and 18 - - 224 



Figs. 19 to 26 - - 232 



Figs. 27 to 3 1 - - 235 



Figs. 32 to 37 - - 242 



Figs. 38 to 42 - - 243 



Fig. 43 - - 245 



Figs. 44 and 45 - - 249 



Fig. 46 - - 251 



Fig. 47 - - - 255 



xv 



