ABSTRACT
There are several sub-breeds of ducks they are Aylesbury, of great size, white, with pale-yellow beak and legs; abdominal dermal sack largely developed. The Rouen, of great size, coloured like the wild duck, with green or mottled beak; dermal sack largely developed. Hook-Billed duck bird presents an extraordinary appearance from the downward curvature of the beak. Goose deserves some notice, as hardly any other anciently domesticaed bird or quadruped has varied so little. The goose figured on the Egyptian monuments seems to have been the Red goose of Egypt. The peacock is another bird which has hardly varied under domestication, except in sometimes being white or piebald. The Canary bird has been recently domesticated, namely, within the last 350 years, its variability deserves notice. Goldfish were introduced into Europe only two or three centuries ago. Hive-bees have been domesticated from an ancient period. The common silk-moth was brought to Constantinople in the sixth century.
