. A junior course of practical zoology. Zoology. 364 SKELETON OF THE FOWL lower jaw is connected with the squamosal by a movably articulated bone, the quadrate, which probably corresponds to either the incus or the malleus of the rabbit; (5) there is only a single auditory ossicle, the columella; (6) there are no teeth. The fowl's skull may be readily divided into cranial and facial portions, which are loosely connected together, and capable of slight moyement upon each other. The cranial portion consists of the cranium proper, or brain-case, and the auditory capsules : the facial part is form
. A junior course of practical zoology. Zoology. 364 SKELETON OF THE FOWL lower jaw is connected with the squamosal by a movably articulated bone, the quadrate, which probably corresponds to either the incus or the malleus of the rabbit; (5) there is only a single auditory ossicle, the columella; (6) there are no teeth. The fowl's skull may be readily divided into cranial and facial portions, which are loosely connected together, and capable of slight moyement upon each other. The cranial portion consists of the cranium proper, or brain-case, and the auditory capsules : the facial part is formed by the jaws and the olfactory QJ B G J D Pig. 47- Gallus bankiva. Tlie skull from the right side. (a. m. m.) A, articular surface of tlie mandible. AT, anterior tympanic recess, leading to Eustachian tube. B, pterygoid. C, occipital condyle. D, palatine. E, rostrum. F, mandibular foramen. FO, foramen ovale. FR, foramen rotundum. FZ, zygomatic process of frontal bone. Q-, H, dentary. IS, xnter-orbital septum. J, jugal. L, laorymal. M, maxilla. MP, maxillo-palatine process of maxilla. Iff, nasal. OF, optic foramen. FM, premaxilla. PT, posterior tympanic recess. Q, quadrate. Q, J, quad- rato-jugal. SF, olfactory foramen. SZ, zygomatic process of squamosal. TF, foramen for fiftb nerve. The cranial portion of the skull is a somewhat conical box of bone, the base of which forms the hinder end of the skull, the apex being directed forwards. In the young skuU the outlines of the component bones. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marshall, A. Milnes (Arthur Milnes), 1852-1893; Hurst, C. Herbert (Charles Herbert), 1856?-1898, joint author. London, Smith, Elder
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1887
