202, EESULTS OF A MENDELIAN EXPERIMENT ON FOWLS. 



EXPLANATION OF PLATE I. 



Fig. 1. Ventral surface of hen produced from cross between silky hen and black-red 

 Bankiva cock, showing "pile" coloration. The do^rsal surface is white 

 without any of the reddish brown colour. The hen represented was 

 F5 II 3 9 iw the record of the pedigree, i. e., a hen of the second brood of 

 the 5th generation. It was killed Dec. 12, 1915, when 1 year and 8 months 

 old. 



Fig. 2. Dorsal surface of cock from the same cross, showing the "pile" coloration 

 in the male. The colour is verj^ slight compared with that of the female, 

 and consists of a slight yellow tinge across the loins and on the upper 

 wing-coverts. The rest of the body is pure white. The specimen was 

 Fg V 1 (? in the pedigree, i. e., a cock of the fifth brood of the 6th genera- 

 tion. It was killed on Dec. 31, 1915, wheji 7 months aid. 



