— 135 — 



Fig. 12. Atlas, back-view. The expansion of the neural foramen is conspicuous. 



13. Epistropheus or axis (2nd cervical vertebra); front view, showing 

 articular surface for articulation with atlas. 



Breadth 132 c.M. 



Height 60 „ 



14. Epistropheus, back view; showing basal end of processus spinosus 

 and the first pair of the so called posterior processus articulares of which 

 only the articular surfaces are developed. 



15. Vertebra colli tertia, back view. 



Breadth 122 c.M. 



Height 55 „ 



16. Vertebra colli quarta; back view. 



Breadth 127 c.M. 



Height 51 „ 



17. Vertebra colli quinta; back view. 



Breadth 122 c.M. 



Height 55 „ 



18. Vertebra colli sexta; back view. 



Breadth 119 c.M. 



Height 60 „ 



19. Vertebra colli septima; front view. 



Breadth 113 c.M. 



Height 56 „ 



20. Vertebra thoracis prima, showing the upturned frontal surface of the 

 vertebral centrum. This vertebral body is already more bulky and the 

 articular surfaces before and behind are already more elliptical than in 

 the neck-vertebrae. 



Breadth 120 c.M. 



Height 67 „ 



21. Vertebra thoracis quinta; with the front-surface of the vertebral centrum 

 turned upwards. 



Breadth 102 c.M. 



. . Height 85 „ 



