

In viewing the vertebral 

 is by far the 1 



taller until the fifth thor 

 In the upper 

 the bones which lie bcl< 

 r, that its greatest tl ' 



Just as the anterior 

 ■i the- bodii 

 larly filled by ligamenl 

 the two upper cervical 

 rtremely I 



The spinal canal 

 vertebrae, has not, then 

 but at intervals i red in 



the intervertebral foramina Figs. 

 it is continuous with the cranial i 

 however, is almost completely 



There arc twenty-three 



twelve in the thora 

 arc the largest, while those situai 

 the atlas and the occiput then 

 atlas and axis are only partially limiu . 

 between the fifth lumbar vertebra 

 foramina in the cervical region ai 

 and lumbar regions they are in 



THE DEVELOPMENT OF THE \ 



As far a> the dev« lopmi 

 •i, one for the body and 

 ■nd month of embryonii life, the 

 giving rise to the different vertebral ; i 

 ", at the .. liberty or ev< 



m the mammillary pr 

 lies. These epiphj - 

 d. 

 In the first year of life t : 

 the bodies, while the 



In the atlas the center for th( 

 in^ until the first year, and not uniting with I 

 terior arch remain separated until the thii 



In the a\is then 

 in the third year. 



The sacral vert* ' 

 two for each ar, h, epiphyseal plal 

 of the fifth sacral vertebra unite fii I 

 tebra (fifth and sixth year), whi 

 In the coccyx the first verl 



