. The Encyclopaedia Britannica; ... A dictionary of arts, sciences and general literature. inata, itwill be the most convenient for comparison with that ofthe Ratitce and the Tinamous (the Dromceognathous variety)below, and the Desmognathous, and other kinds seen inBirds above the Gallinacece in the zoological scale. The Cranium of the Fowl—First Stage.—The chondro-cranium may be seen at the end of the fourth and the begin-ning of the fifth day of incubation, although the cartilagehas as yet but little consistence, its cells being imperfectlysoldered together. The head of the skull at this sta
. The Encyclopaedia Britannica; ... A dictionary of arts, sciences and general literature. inata, itwill be the most convenient for comparison with that ofthe Ratitce and the Tinamous (the Dromceognathous variety)below, and the Desmognathous, and other kinds seen inBirds above the Gallinacece in the zoological scale. The Cranium of the Fowl—First Stage.—The chondro-cranium may be seen at the end of the fourth and the begin-ning of the fifth day of incubation, although the cartilagehas as yet but little consistence, its cells being imperfectlysoldered together. The head of the skull at this stage still 1 The whole development of the Chick la explained in a masterly andlucid manner by Messrs Foster and Balfour in their excellent work,T*< EUment4 of Embryology, London : Macmillan and Co. Part I.,1874. The description of the fowls skull here given is principallyfrom Mr Parkers paper, Phil. Tram., 1869, plates 81-87, pp. a detailed description of the anatomy of birds, see Dr H. Klassen und Ordnungen da Thierreic/u, 1869, 6t6 Baud,IV. AbthtUung,
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