226 



First Matings 



Isabel McCracken 



DIAGRAM U— Mating Category b 



S X S B X B 



B X B 



First Generation S, B and AB (sport) B and AB (sport) J | 



Second Generation 



AB, B I (mixed brood) B (all) 



Third Generation 



B (all) 



DIAGRAM III — Mating Category c 



First Matings SxS BxB SxS SxS 



First Generation S, B and AB (sport) B and AB (sport) S (all) S (all) 



Second Generation AB, B and I (mixed) 



S (all) 



Third Generation 



S fall) 



First Matings 



DIAGRAM IV — Mating Category d 



SxS BxB 



First Generation S, B and AB (sport) B and AB (sport) 



I I 



Second Generation 



Third Generation 



AB, B and I (mixed broods) 



I I 



B(all) B and AB (mixed broods 3.6:1) 



