134 INHERITANCE IN POULTRY. 



PLATE XVI. 



FIG. 48. Head of second generation Minorca X Polish hybrid, <^ 474. Shows last term 

 of series, beginning with fig. 50 and passing through fig. 49, of reduction 

 of median component of Y comb, leaving only two papillae remaining. 

 (H. A. H.) 



FIG. 49. Head of second generation Minorca X Polish hybrid. Shows middle term of 

 series passing from Y comb to V comb. The median portion of the comb is 

 represented by a carunculated mass at the base of the papillae. (H. A. H.) 



FlG. 50. Head of second generation Minorca X Polish hybrid, tf 259. Shows beginning 

 degeneration of median component of Y comb, which ends in the V comb 

 (fig. 48). (H. A. H.) 



FlG. 51. Head of second generation Minorca X Polish hybrid. Shows 2 pairs of papillae, 

 high nostrils and rudimentary crest, indicating that the first two character- 

 istics are independant of the third. H. A. H.) 



FlG. 52 Dorsal view of head of (Minorca X Polish) X Minorca hybrid. Shows Y comb 

 in which the median component extends between the arms of the Y, the 

 whole resembling a pea comb. (H. A. H.) 



