THE ANTEBIOB VENA CAVA. 



607 



traversing the posterior part of the lacerated foramen, and also opening some- 

 times into the petrosal sinus ; these cavities may be regarded as the represen- 

 tatives of the lateral sinuses in Man ; 3, In some instances, an inferior 



Eh ^^ 



QJ 00 CL, ■'■ 



