10 



THE VERTEBRAL COLUMN. 



The foramen is nearly circular, and is smaller than in the cervical or the lumbar 

 region. 



The first, tenth, eleventh, and twelfth dorsal vertebras present certain characters 

 by which they may be individually distinguished. 



The first dorsal vertebra in its general conformation approaches very closely 



MAM. PROC. 

 TRANSV. PROC. 

 ACCESS. PROC. 



Fig. 9. NINTH, TENTH, ELEVENTH, AND TWELFTH DORSAL, AND FIRST LUMBAR VERTEBRA, FROM 

 THE RIGHT SIDE. (Drawn by D. Gunn.) 



the seventh cervical. The body is elongated transversely and concave on the upper 

 surface ; the superior vertebral notches are of considerable depth ; the upper articular 

 surfaces are oblique ; and the spinous process is long and nearly horizontal! On 

 each side of the body is a circular facet close to the upper border for the first 

 rib, and a very small facet below r for the second. 



The tenth dorsal vertebra touches only one rib on each side, and has a 

 single nearly complete articular surface, mainly on the pedicle. There is usually 

 a small facet on the transverse process. 



