xii MENDELISM 



FIG. I'AGE 



9. Sections of Primula Flowers . . 5 ^ 



1 o. Small- and Large-eyed Primulas . . . ■ 52 



11. Diagram illustrating Reversion in Pigeons . . 61 



12. Primula sinensis y. Primula stellaia . .64 



13. Diagram illustrating Cross between Dominant and 



Recessive White Fowls .... 68 



14. Bearded and Beardless Wheat . . 69 



15. Feet of Fowls ...... 7i 



16. Scheme of Inheritance of Horns in Sheep . . 72 

 ^7. The " Cretin " Sweet-Pea . . .80 



1 8. Scheme of Cross between Silver Cock and Gold Hen 8 5 



19. Scheme of Cross between Silky Hen and Brown 



Leghorn Cock . .... 89 



20. Scheme of Cross between Brown Leghorn Hen 



and Silky Cock ...... 90 



2 1. Scheme of Cross between Fj Birds and Brown 



Leghorn ..... 91 



22. Scheme to illustrate Nature of F^ Generation from 



Silky Hen and Brown Leghorn Cock . . 92 



23. Scheme to illustrate Nature of Fj Generation from 



Brown Leghorn Hen and Silky Cock . . 93 



24. Diagram illustrating Nature of Offspring from 



Brown Leghorn Hen x Fj Cock . . 94 



25. Scheme to illustrate Heterozygous Nature of Pure 



Brown Leghorn Hen . ... 96 



26. Abraxas grossulariata audi vwc. laciicolor . . 97 



27. Scheme of Cross between White -Eyed Male 



Drosophila and Red-Eyed Female ... 99 



