136 The Alligator and Its Allies 



main divisions: (i) the ophthalmic branch, (2) 

 the superior maxillary branch, and (3) the inferior 

 maxillary branch, (i) The ophthalmic in turn 

 divides into two branches: the smaller, frontal, 

 going to the integument of the upper and lower 

 eyelids; the larger, nasal, going chiefly to the nasal 

 cavity but also sending some small branches to the 

 upper and lower eyelids. (2) The superior maxil- 

 lary branch separates into a number of divisions: 

 (a) a branch that, in the neighborhood of the 

 auditory capsule, fuses with the facial nerve; (b) 

 a twig to the integument of the forehead and 

 to the upper and lower eyelids ; (c) a branch to the 

 Harderian gland and the conjunctiva; (d) a branch 

 to the neighborhood of the cheek, to the angle of 

 the mouth, and to the palatine branch of the facial 

 nerve; (e) a branch to the palate; (f) a branch to 

 the integument of the upper jaw; (g) a branch to 

 the teeth of the upper jaw. (3) The inferior 

 maxillary branch divides into four branches: (a) 

 this division supplies the skin of the cheek 

 region; (b) a branch to the chewing muscles; (c) 

 a branch that divides into two nerves the 

 first going to the skin of the lower jaw, the 

 second dividing again into two nerves, both of 

 which lead to the integument of the lower jaw; 

 (d) the fourth division of the inferior maxillary, 

 known as the inferior alveolar, itself divides into 

 two twigs (a') the first twig divides into two 

 parts, a larger and a smaller, both of which lead, 



