VEETEBEAL COLUMN 



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may be cephalic or cephalic and dorsal. The facet on its ventral 

 surface is occasionally decidedly concave. The dorsal surface is some- 

 times deeply grooved transversely where it passes ventral to the trans- 

 verse ligament of the atlas. In some specimens the tip of the process 

 is rouo-h and irregular. 



SEVENTH CERVICAL VERTEBRA- 



-VARIATIONS. 



The most important variation in the seventh cervical is the presence 

 of an arterial canal in the transverse process. An examination of 

 fifty specimens revealed the canal twice on one side only, three times 

 on both sides, and once as a deep notch on the ventral surface, probably 

 converted into a foramen by a fibrous band. 



THE SACRUM 



-VARIATIONS IN SIZE. 



