Herrick, Cranial Nerves of the Cod Fish. 295 



main nerve. After a short course a large ciliary ganglion is 

 formed, which is closely applied to the III nerve, so that it is 

 not possible to distinguish the long and short roots of the cili- 

 ary ganglion. 



Just cephalad of the ciliary ganglion the III nerve divides 

 into three branches, one of which continues forward in about 

 the original relations and in the middle of the orbit supplies the 

 m. rectus internus. The other two turn ventrad. One passes 

 around the outer side of the m. rectus inferior to continue 

 cephalad along its ventral border and closely external to the r. 

 palatinus to supply the m. obliquus inferior. The other con- 

 tinues along the dorsal border of the m. rectus inferior and 

 innervates it. 



The sympathetic ramus ciliaris brevis after separating from 

 the ciliary ganglion accompanies for a short distance the III 

 nerve for the m. rectus internus, then separates from this and 

 joins itself to the dorsal surface of the orbital vein, finally to 

 follow the ventral face of the optic nerve, with which it enters 

 the eye ball. 



I may add in passing that a diagram of the relations of the 

 eye-muscle nerves based on Allis' scheme ('97, Plate XXII, 

 Fig. 12) shows no important differences from the one which I 

 constructed for Menidia ('99, Fig. 13), save in the absence of 

 the vestigeal r. ophthalmicus profundus. 



14. The N. GlossopJiaryiigeus. 



Stannius' description of the IX roots of Gadus is confirmed. 

 The IX root of Cole (p. 176) is the first root of Stannius. It 

 arises far forward and ventrally, under the origin of the r. later- 

 alis vagi. This is the motor root. It runs up and back close 

 to the brain between it and the posterior VIII root, then be- 

 comes wedged in between this and the root of the r. lateralis 

 vagi (these two acustico-lateralis roots being here closely united), 

 and then continues back along the ventral face of the r. later- 

 alis vagi until the first root from the lobus vagi emerges from 

 the brain. 



Cole describes (p. 176) fibers from this IX root to the 



