226 THE FIFTH PAIR, OF XERVES. 



the cancellous tissue of the bone and the vascular 

 gums are supplied. * * . * 



" In the horse the maxillary plexus is most devel- 

 oped above and between the alveoli of the three pre- 

 molar teeth. It is less complex where it supplies the 

 molar teeth, their alveoli, and the gums. In the 

 lower jaw of the horse a very rich plexus begins to be 

 formed in the cancellous substance of the bone by 

 branches of the dental nerve, soon after its entry into 

 the canal." 



