Breeds
American Class
Breed is used almost intirely to designate body shape and form. For instance, in the American class are the Plymouth Rock,Wyandotte, and the Rhode Island Red, each one a distinctive breed and each one having distinctive body shape or type. The plymouth Rocks, bodies are represented by oval curves, and the Whandottes' by circular curves, and the Rhode Island Reds' by rectangles. The differences can easily be distinguished from the sketches.
The aim is to breed true to body shape, and breed shape, as well as to varity color.

text from Lippincotts Farm Manuals,
Productive Poultry Husbandry,cirra 1946
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