Fio. 2. — ^The Vertebral Colt-mn 



A, side view, left side ; B, back view ; C 1-7, cervical vertebrae ; D 1-12, 

 dorsal (thoracic) vertebrte ; L 1-5, lunibar vertobr?B ; S, sacrum ; 0, 

 coccyx ; sp, spinous processes ; tr, ti'ansverse processes. 



