526 



Prof. J. 0. Ewart. 



profuiidus the name of meso-cephalic. He further states that there 

 can be no doubt that the ciliary (as distinguished from the meso- 

 cephalic) ganglion of lower vertebrates is exactly homologous witk 

 the ciliary ganglion of mammals. 



The ophthalmicus profundus nerve (1, fig. 1) in Lcemargus arises by 

 several rootlets (2 5) from the side of the medulla immediately in 

 front of the main root of the trigeminal, and runs outwards in contact 

 with the anterior surface of the trigeminal to enter the large foramen 

 which serves for the passage of the trigeminal, and the anterior 

 portions of what may best be known as the facial complex. As the 

 ophthalmicus approaches the foramen it partly blends with the trige- 

 minal, and while in the foramen it communicates with this nerve by 



