NOSTRIL-FORM. 



63 



Table 52. — Distribidion of frequency of grades of "openness " in offspring when both parents are extracted 



dominants {extracted DDXDD). 

 [Abbreviations: H = Houdani L^Leghom; M^Minorca; P = Polish; WL = White Leghorn.] 



Table 53. — Distribution of frequency of grades of "openness" in offspring when both parents are heterozygous 



(BBxDR). 



Table 64. — Distribution of frequency of grades of "openness'' in offspring when both parents are 

 extracted recessives {extracted RBxRB). 



* Cf. Serial No. 12o, 



