MORGAN AND GOOD ALE, INHERITANCE IN POULTRY 121 



FNb fNB Barred 5 



fNb fNb Black $ 



FNb fNb Black 2 



fNB fNb Barred $ 



(7) Several of the parental barred females were mated with No. 568, 

 barred P x $ , giving 8 barred (3 2 , 1 £ ) and 3 black (15). 



FNb fNB Barred 2 



fNB fNb " $ 



FNb fNB Barred 2 B 



FNb fNb Black 2 1 



fNB fNB Barred $ 



fNB fNb " $ ' 



(8) Four of the parental Langshan females mated to No. 569, barred 

 I\ male, gave 17 barred (6 2 , 2 $ ) and 13 black (4 $ ; no record for 2 ). 



FNb fNb Black 2 



fNB fNb Barred $ 



FNb fNB Barred 2 6 



FNb fNb Black 2 ? 



fNb fNB Barred $ 2 



fNb fNb Black $ 4 



(9) Two of the barred F x females used in (3) were bred to a Eock 

 male, not, however, of the Latham strain. There were only 5 chicks, all 

 barred. 



FNb fNB Barred 2 



fNB fNB " $ 



FNb fNB Barred 2 



fNB fNB " $ 



Summary. — Expectation in all these matings has been closely fulfilled 

 ( with the exception of No. 1 and perhaps No. 6 ) , on the assumption that 

 the barred female is heterozygous for both barring and sex, both female- 

 ness and barring being dominants and that the two factors do not occur 

 in the same gamete. 



Description of F x Adult Plumage. — The males (Plate XVII, figs. 5 

 and 7) resemble one another closely and together with the barred F ± 

 females are very suggestive of the Coucou de Malines, a Belgian breed. 

 The barring of the individual feathers of the males (Plate XVIII, figs. 

 10, 13) is less sharp and regular than that of the parental Rocks (Plate 

 XVIII, fig. 8), while the dark bars tend to run together, particularly in 

 wings and tail, and at the same time, the light bars become more or less 



