CETACEA. 



45 



base. The other cervical vertebrae (Fig. 18) have similar 

 broad, very short bodies, small arches, without spines, and 

 very long transverse processes, composed of slender upper 



Fie. 16 Anterior surface of at las of common Fin Whale (!>al<rnt>ftfra ntuscntits). ,'.. 

 in foramen for first spinal nerve. 



and lower bars, widely separated at their bases, but united at 

 their extremities so as to enclose a very large space between 

 them. In the seventh the upper process only exists, and the 



Flc. 17. Anterior surface of axis of common Fin Whale (Balitncptera. tnufctilus), i . 

 a odontoid process. 



lower one is occasionally imperfect in the sixth. 1 In very 

 young animals these processes are formed only of cartilage 



1 Professor Turner has shown that, in a foetal BaLmoftera si 

 the inferior transverse process of the seventh is present in a cartilagi- 

 nous condition. (Journal of Anatomy and Physiology, May 1871.) 



