Constitution of the White Leghorn Breed. 



173 



The cf used in this experiment was 193 A, previously described. 



Black Minorca 9 , 183 A: Weight 6^ lbs., neck flat, back 

 of good length; body of medium length; comb, large with 

 serrated blade, five points, — falls half on each side; eyes light 

 hazel; ear-lobes bluish white, mottled with red; wattles of 

 fine texture, small; wing-coverts and tail-coverts greenish 

 with purple barring; primaries, secondaries and main tail 

 feathers are dull black; body feathers are very dark brown; 

 under-color slate; shanks are dark slate. Black Minorca 9 

 184 A was similar in all important respects to 183 A. 



As a result of this cross all the Fi birds were white. Many showed 

 black tickings and one d^ put up a barred feather. This bird was 

 hatched as a white chick with a small patch of black down on the 

 back. Later a buffy tinge developed over some of the wing coverts. 



Case Ssi.— [White Leghorn d" X Black Minorca 9 ] d" X [White 

 Leghorn d" X Black Minorca 9] 9- Nature of mating: CcBbffli 

 X CcBhFfli. (For discussion, see p. 193). 



Of the W. L. X B. M. cross-breds raised in 1910, cf 200 C, which 

 put up one barred feather the first year, was mated in 1911 with two 

 of his sisters, 199 E and 200 D. These two 99 were white but 

 showed many feathers that were ticked with black. The results of 

 this cross are presented in Table 9. 



Table 9.— Showing the results obtained in F2 from the mating of White Leg- 

 horn X Black Minorca cross-breds. 



