/ ' :,rii>r sacral 

 foramen 



. 





I 16. 



Sacrum 



Median 

 sacral 







Sacral cornu 

 ( 'occygeal cornu 



Fig. is. 



■^m. 







I 







/ 



■ 

 sw 



I . 













■ 



Fig. W 



S 



Third . 



1 





