EYE OF THE ENGLISH SPAREOW 



385 



branch of this superior division appears to reach the superior 

 palpebral muscle. Another small branch is sometimes given 

 off to the ciliary ganglion (fig. 22). The origin of this small 

 branch is variable (fig. 24, C, and figs. 21 and 22, eg). This 



Figs. 21 and 22 Posterior view of a portion of the right eyeball after removal 

 of the muscles, showing the ciliary ganglion and its relations to the various 

 nerves, to show variations in their branching, a, artery which pierces the sclera 

 at the angle of the sheath of the optic nerve and to supply the pecten; h, branch 

 from the ophthalmic nerve; eg, ciliary ganglion; E, margin of eyeball; I, inferior 

 branch of third nerve; Ic, long ciliary nerve; N sh, sheath of optic nerve; OP, 

 optic nerve; Opth, ophthalmic branch of fifth nerve; S, superior branch of third 

 nerve; v, point of emergence through the sclera of the vein from the pecten; 

 3, third nerve. X 20. 



