. The Encyclopaedia Britannica; ... A dictionary of arts, sciences and general literature. st-oral enfolds itself to make all the lowerend much of the upper jaw,—there are in the outer partof the maxillo-palatine process three bones formed on eachside, as we have seen. The first of these is the bony ichthyic maxillary {mx.),With a bony foot, that grows inwards and backwards in alalcate manner, to articulate with the sides of the fore-endof the vomer. These are the maxillo-palatine processes{) Behind the maxillary, overlapping its jugal pro-cess, is the styloid jugal (/) ; and behind this,
. The Encyclopaedia Britannica; ... A dictionary of arts, sciences and general literature. st-oral enfolds itself to make all the lowerend much of the upper jaw,—there are in the outer partof the maxillo-palatine process three bones formed on eachside, as we have seen. The first of these is the bony ichthyic maxillary {mx.),With a bony foot, that grows inwards and backwards in alalcate manner, to articulate with the sides of the fore-endof the vomer. These are the maxillo-palatine processes{) Behind the maxillary, overlapping its jugal pro-cess, is the styloid jugal (/) ; and behind this, and over-lapping it, the quadrato-jugal, which is hooked to fit inthe side of the base of the quadrate behind {qj., q.)There is a small joint cavity at this place. The side view (fig. 15) illustrates the above description;but it also shows much that is not visible below. Thesection (fig. IG) helps us still further. Tlie roofing bones are now weU seen; the largest of these are the frontals (/.), which form the upper crescent ofthe large circle of the eye. Tbey flatten in front, whert. ^V^- . Fio. le.—LonKltudlnally Tertlcal secllon of the same skull, showing axial parts,cranial cavity, and inner view of mandible, X 3 dlametera. i-o/., Inter-orhitalspace, or fenestra; , anterior pterygoid process, or baai-ptei7goId;op., opisthotic; , anterior aemicircular canal; , ainua caiial; ip.,splenlai bone. The smali bony centre between the prootic (pro.) and UiaBuper-occipltal () is the epiotic they are overlapped by the nasals and nasal processes ofthe premaxillaries ()—a peculiarly ornithic characteramongst the higher vertebrata. The orbital rim is veryneat and perfect; the main part of the bone, covering thehemisphere, is a convex radiating scale. Inside the orbitthe bone sends inwards a thin scooped orbital process(/.), on whose convex surface the sloping btsan fails to invest the fontanelle, and the orbito-sphenoids,as yet, are not.
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