46 



OSTEOLOGY. 



In the Eleventh Dorsal, the body approaches in its form and size to the lumbar 

 vertebrae.* The articular facets for the heads of the ribs, one on each side, are of 

 large size, and placed chiefly on the pedicles, which are thicker and stronger in this 

 and the next vertebra, than in any other part of the dorsal region. The transverse 

 processes are very short, tubercular at their extremities, and have no articular 

 facets for the tubercles of the ribs. The spinous process is short, nearly horizontal 

 in direction, and presents a slight tendency to bifurcation at its extremity. 



Fig. 6. Peculiar Dorsal Vertebrae. 



(An entire fa^et aJ>avs 

 \ADcrtn facet lelow 



A Demi-facet a6ovt> 



O'ftf entire fa.rct, 



An e7iti re facet 

 Yo facet on Tra.ns.Pror. 

 ".n -is n/di.mcnta>r/j 



An entireja-cel 

 Nofatrtton.Tra. tif JIT. 



Infer.Arfic. Proe 

 t o 'ii vejr and turned 

 outward 



The Twelfth Dorsal has the same general characters as the eleventh ; but may 

 be distinguished from it by the inferior articular processes being convex and 

 turned outwards, like those of the lumbar vertebrae ; by the general form of the 

 body, laminas, and spinous process, approaching to that of the lumbar vertebrae ; 

 and by the transverse processes being shorter, and the tubercles at their extremi- 

 ties more marked. 



