PLATE XVIII 



FEATHEBS OF LANGSHANS, BARBED PLYMOUTH BOCKS AND THEIB OFFSPBING 



Hackle feathers (except 11 and 14) from the various types of birds used in 



the experiments. 



Fig. 1. From Langshan female. 



Fig. 2. From F 1 black females. 



Figs. 3 and 4. From a pure bred Barred Rock female. 



Fig. 5. From a second Barred Rock female. Note the differences in the even- 

 ness of the barring. 



Fig. 6. From the hen shown in Plate XVII, Fig. 4. 



Fig. 7. From F ± barred female. 



Fig. 8. From a pure bred Barred Rock cock. 



Fig. 9. From same bird, illustrating a partially black feather occurring in 

 pure bred stock. 



Figs. 10, 11, 12, 14. From F t bird shown in Plate XVII, Fig. 5. 



Fig. 10. Hackle feather. 



Fig. 11. Breast feather. 



Fig. 12. Shows the Jungle fowl coloration. 



Fig. 13. From bird shown in Plate XVII, Fig. 7. 



Fig. 14. Primary, to show reduction in barring. 



