LIST OF ILLUSTRATIONS 



fAOB 



no. 



29. DIAGRAM ILLUSTRATING GALTON'S LAW OF ANCESTRAL INHERIT- 



ANCE (AFTER GALTON AND MESTON) . . . .325 



30. DIAGRAM TO ILLUSTRATE THE DIFFERENCE BETWEEN STATIS- 



TICAL AND PHYSIOLOGICAL FORMULATION (AFTER DARBISH1RE) 330 



31. PEAS SHOWING MENDEL'S LAW .... facing 339 



32. DIAGRAM OF MENDEL'S LAW . . . . 340 



33. DIAGRAM OF MENDELIAN INHERITANCE IN MIRABILIS JALAPA 



facing 343 



34. DIAGRAM ILLUSTRATING MENDEL'S LAW. . . . ,, 347 



35. COMBS OF FOWLS .......,, 353 



36. HYBRIDISATION IN MIRABILIS JALAPA (FROM CORRENS) . 355 



37. MENDELIAN PHENOMENA IN NETTLES (FROM CORRENS) . 357 



38. MENDELIAN PHENOMENA IN WHEAT (AFTER R. H. BIFFEN) facing 358 



39. MENDELIAN PHENOMENA IN HELIX HORTENSIS (AFTER LANG) 



facing 360 



40. PURE LINES IN PARAMCECIUM (FROM JENNINGS) . . . 378 



41. VARIETIES OF WHEAT (AFTER R. H. BIFFEN) . . . 384 



42. MODES OF SEGMENTATION ..... .facing 438 



43. RELATION BETWEEN REPRODUCTIVE CELLS AND THE " BODY " . 430 



44. DIAGRAM OF MATURATION AND FERTILISATION . . . 436 



45. SEXUAL DIMORPHISM IN HUMMING-BIRDS (FROM DARWIN, AFTER 



BREHM) . . . . . . . . . 479 



46. SEXUAL DIMORPHISM IN GRASSHOPPERS (FROM DARWIN) . . 481 



47. DIAGRAM ILLUSTRATING THE RELATION BETWEEN REPRODUCTION 



AND INDIVIDUATION 539 



