70 MENDELISM CHAP. 



- Among birds a case of similar nature is that of the Blue 

 Andalusian fowl. Fanciers have long recognised the 



Sinensis X Stellata 



I 



Intermediate F 1 



Sinensis Inter. Inter. Stellata F 2 



Sinensis sin. int. int. StelL Stellata F 3 



Sinensis Stellata- F 4 



difficulty of getting this variety to breed true. Of a slaty 

 blue colour itself with darker hackles and with black 

 lacing on the feathers of the breast, it always throws 



Blue X Blue 



Black Black Blue Blue White White 



Black X White 



Blue 

 (all) 



"wasters" of two kinds, viz. blacks, and whites splashed 

 with black. Careful breeding from the blues shows that 

 the three sorts are always produced in the same definite 



