OSTEOLOGY. 



73 



Name. 

 Frontal (2). 



Temporal (10). 

 Sphenoid (14). 



Ethmoid (3). 



FACE. 



Nasal. 



Superior Max- 

 illa (4). 



Lachrymal. 



Malar. 

 Palate. 



Inferior Turl>i 

 nated. 



Yonier. 



Inferior Maxilla. 



BODY. 

 Hyoid (f>). 



Centres. 



1 for each lateral portion. 

 From membrane. 



1 for squamoiis process. 



1 for auditory process. 

 6 for petro-mastoid. 



2 for styloid process. 



s t'oi- post-sphenoid. 

 1 for eaeli greater wing and ex- 

 ternal pterygoid plate. 



1 for each internal pterygoid plate. 



2 for posterior part of body. 



1 for each lingula. 

 6 for pre-sphenoid: 



1 for each lesser wing. 



2 for anterior portion of body. 

 1 for each spheno-turbinal. 



1 for each lateral mass. 

 1 for lamella. 



1 for each bone. 



1 pre-maxilla. 



1 pre-palatine portion. 



1 maxillary portion. 



1 malar 



A sh'gle centre. 



Single centre. 



Single centre at junction of plales. 



Single centre. 



Single eenl re. bu< 1 \vo lamina 1 . 



Prolmltly several centres; at birth 



consists of t \vo halves. 



1 for body and for each cornua. 



Time of 

 Appearance. 



7th to 8th week. 



United by 4th 

 year. 



2d month. 



Later. 



5th or Oth month. 



1 for base ap- 

 pears before 

 birth and one 

 after birth. 



Appear from 8th 

 week to third 

 year, and union 

 of all parts is 

 accomp 1 i s h e d 

 by the 20th 

 year, and with 

 occipital. 18th 

 to 25th year. 



4th to 5th festal 

 month. 



Unite about 2d 

 year. 



Gth week. 



Very early. 



Ant rum appears 

 about fourth 

 fretal month. 



7th week. 

 (ith \veek. 

 2d foetal month. 



Middle of foetal 

 life. 



81 h week. 



\ cry early, be- 

 ing second in 

 order. 



3 months after 

 birth. 



