LIST OF ILLUSTRATIONS 



(!N THE OKDER OF THEIR INSERTION) 



PLATE I. 



FIG. 



FIG. 

 PLATE 

 PLATE 



FIG. 



FIG. 

 PLATE 



i. 



3- 

 4- 



4- 



PLATES 5-7 

 PLATE 8. 



PLATE 9. 

 PLATE 10. 

 PLATE 1 1 . 

 PLATES 12- 

 PLATE 16. 



PLATE 17. 

 PLATE 18. 



PLATE 19. 



PLATE 20. 



FIG. 5. 



FIG. 6. 

 PLATE 21. 

 PLATE 22. 

 PLATE 23. 

 PLATE 24. 



PLATE 25. 



PLATE 26. 

 PLATE 27. 

 PLATE 28. 



PAGE 



nrginea, 



Frontispiece 

 4 



Following 



Variation in color and in color pattern in Neritina 

 variety minor. (In color) ..... 



Goose-barnacle ........ 



Gerarde's figure of " Barnacles producing geise' 1 . 



Variation in Trillium grandiflorum 



Varieties of Pahidestrina protca .... 



" Bag-worm,'' Thyroidopteryx epheinerifonnis 



Honey-bees ....... 



Varieties of horses ...... 



Varieties of cabbage : Savoy cabbage, kale, broccoli, Brussels 

 sprouts, cauliflower, Swedish turnip, and kohlrabi . Following 



Varieties of cabbage, etc.. as figured in Gerarde's Hcrball. si\- 



teenth century ... 



Varieties of turnips ... 



Varieties of dahlias ... 



" Cactus " type of dahlia .. 



15. Varieties of domestic chickens. 



. Following 



(In color) . . ' 



B. The evolution of the 

 .... Following 



C, Head of 



. Following 

 Leg of Cochin cock. 



. Following 



A. Jungle fowl {Callus bankiva). 



game cock ....... 



Japanese long-tailed cocks ..... 



,/. "Frizzled fowls." B. Head of Breda cock. 



salmon faverolle ...... 



A. Feather from a -silky fowl. 



C. " Cochin " bantams ..... 

 Varieties of domestic pigeons .... 

 Skull of Polish fowl ... . . 



Rock pigeon (Cohtinba livia} .... 

 Skeletons of various unicellular animals and plants 

 Male and female bobolink (Dolichony.r oryzii'orus} 

 Ruffed grouse (Bonasa iinibcllns}, male, female, and young 

 ./. Male and female argus pheasant. B. Male and female lyre 



bird . . . " . 

 .-/. Male and female N'esocc-ntor ntilo. 



( Phlogcenas jobiens is ) 

 Male and female humming-birds . 

 Turkey cock " strutting " 

 Courting attitudes in hunting spiders 



xiii 



. Following 

 B. Male and female pigeon 



5 

 6 

 8 



21 



Following 28 



28 



28 

 28 

 28 

 28 

 3 



30 

 3 



48 



48 



48 



48 

 48 

 48 



