Chambers's encyclopaedia; a dictionary of universal knowledge . terial damage. Moreover, thecurved lines or ridges which may be traced roundthe skull tend to strengthen it. The weakest partof the skull is at the base. Hence, notwithstandingits remo\al fjoni exposure to direct injury and theprotection alibrded by the soft parts, fracture takesplace more fre-quently at thebase than atany other partof the skull,fracture oftentaking placehere even whenthe skull wasnot broken atthe part are twopoints in thearchitecture ofthe bones ofthe face whichdeserve espe-cial notice—viz. (1) thegr
Chambers's encyclopaedia; a dictionary of universal knowledge . terial damage. Moreover, thecurved lines or ridges which may be traced roundthe skull tend to strengthen it. The weakest partof the skull is at the base. Hence, notwithstandingits remo\al fjoni exposure to direct injury and theprotection alibrded by the soft parts, fracture takesplace more fre-quently at thebase than atany other partof the skull,fracture oftentaking placehere even whenthe skull wasnot broken atthe part are twopoints in thearchitecture ofthe bones ofthe face whichdeserve espe-cial notice—viz. (1) thegreat strengthof the niusalarch ; and (2)the immobilityof the upperjaw, which isfixed by —thena-sal, the zygo-matic, and thepterygoid. The ofthe skull,whether seenfrelluni. These. Fig. 4.—Base of the Human Skull:1, 1, bard palate; 2, 2, palate bont-s ; 3,vomer; 4, 2yj;oniatic fossa; 6, Kisilarprocess of the occipital bone : 6, foramenmagnum; 7, furainen ovale; 8, glenoidfossa ; 9, external auditory foramen ; 10,carotid foramen of the left side: 11,styloid process : 12, n]astoid process ; 13,one of the condyles of the occi]>ital bone. 492 SKULL fossa; are luaikcd, as is the whole skiill-cap, bytlie cerebral oonvoliitioiis, and they contain uunier-ous foianiina and lissures wbitli give passageto vaiions sets of nerves and blood-vessels. Theexternal or outer surface of the base of the skull,if we consider it from before backwards, is formedby the palate |)rocesses of tlie superior maxillaryaiid jialate bimes ; the vomer : the pterygoid andspinous processes of the sphenoid and part of itsbody; the under surface of ihe temporal bones;and the occipital bone. The most important ofthe parts which it presents are named at lig. 4. The Miirphuloijy of the Skull is tl
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