PLATE 2

1. Hen-feathered F₁ male.
2. F₁ female.
 3. Castrated F₂ male.
4. Castrated F₁ male (Fig. 1).

PLATE 3

1. Castrated Sebright male.
2. F₂ Hen-feathered male.
 3. Same castrated.
4. F₂ Castrated male.