122 



THE SKELETON. 



The First Dorsal Vertebra presents, on each side of the body, a single entire 

 articular facet for the head of the first rib, and a half facet for the upper half 

 of the second. The upper surface of the body is like that of a cervical verte- 

 bra, being broad transversely, concave, and lipped on each side. The articular 

 surfaces are oblique and the spinous process thick, long, and almost horizontal. 



Fig. 73. Peculiar Dorsal Vertebrae. 



(A. if. entire ftictf f> 

 \AJ)cwi facet 



. agave 



One entire facet- 



An entire facet 

 .Vo facet on Tra ns.Proe. 



An 



Nofa-fttanTra. nf.jix 

 .. ,. . - , . Infer. Areic.Pro* 

 til \{ comvex-andf-urnrd 



outward 



The Ninth Dorsal has no demi-facet below. In some subjects, however, the 

 ninth has two demi-facets on each side, then the tenth has a demi-facet at the 

 upper part ; none below. 



The Tenth Dorsal has (except in the cases just mentioned) an entire articular 

 facet on each side above ; it has no demi-facet below. 



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

 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 



