84 Exhibition of Mendelian Experiments. 



offspring coloured, and no whites; whereas true white 

 breeds crossed with coloured breeds give all offspring white, 

 or white with small coloured splashes. 



SlLVEE-GrEEY OR DuCKWINO. 



One of the types of colour produced by mating the first 

 crosses (F.l.) from White Leghorn or White Dorking with 

 Brown Leghorn (Bankiva colour). The Silver-grey is a 

 homozygous form, and breeds true from its first appearance. 



First cross ? between Brown-Breasted Bantam x Black- 

 Red Bantam, showing dominance of the novel Brown- 

 Breasted characters over the Black-Red, which nevertheless 

 has almost exactly the colour of Gallus Bankiva (of which 

 a <$ is shown). 



The first cross birds bred together give a Mendelian 

 segregation, with the ratio 3 brown-breasted : 1 black-red. 



Three Andalusian cockerels, Blue, Black, and White- 

 splashed. The Andalusian fowl never breeds true. 



Blues bred together give Blues, Blacks, and Whites in the 

 proportion of 2 : 1 : 1. 



The Blacks breed true, as also do the White-splashed. • 



When Black is crossed with White-splashed all the offspring 

 are blue. (See diagram on the wall at the side.) 



The down colours of the three are very distinct. Two 

 White-splashed and one Black are shown. 



