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the facialis immediately turns downward, and leaves the chamber by 

 passing through the anterior end of fenestra 2 . It then runs down- 

 ward, laterally, and backward along the internal surface of the so- 

 called hyoid cartilage, and passes outward along the hind edge of 

 that cartilage, immediately ventral to the superior lateral cartilage; 

 the nerve here lying between the hyoid cartilage and the m. cranio- 

 hyoideus, which latter muscle would be, in Ateks and Jackson's 

 terminology, a cranio-branchialis. A branch is here sent backward 

 along the outer surface of that muscle, innervating it. The main 

 nerve then turns downward along the hind edge of the hyoid, and then 

 forward and downward across the external surface of that cartilage, 

 there lying immediately internal to the m. copulo-quadratus superficialis. 

 Ventral to the hyoid, the nerve continues its forward and downward 

 course, there lying between the m. hyo-copulo - palatinus, externally, 

 and the m. copulo-quadratus profundus internally. Branches are sent 

 from it to the m. copulo-quadratus superficialis and the m. hyo-copulo- 

 palatinus, innervating those muscles. Near the antero-ventral edge of 

 the m. hyo-copulo-palatinus the nerve turns outward between the an- 

 terior edge of that muscle and the hind edge of the m. copulo-palatinus, 

 and is there lost, in all my sections, the sections all being there imper- 

 fect. This terminal part of the nerve may be sensory. 



No trace of a branch of the facialis going to the auditory capsule, 

 the "ramus acusticus accessorius ,, of Müller's descriptions could be 

 found. 



Linea Lateralis Vagi. 



The nervus lineae lateralis vagi, or, more properly, what I take 

 to be that nerve, arises from the dorsal surface of the medulla, dorsal 

 to, and but a few sections posterior to, the dorso-posterior or buccalis 

 root of the maxillo - mandibularis ganglion. In one series of sections 

 it was ganglionic while still inside the cranium, the ganglion lying close 

 against the medulla, and its cells being small; in both these respects 

 exactly resembling the acustico - facialis ganglion. Kunning downward 

 and backward from there, and lying always dorsal to the acustico- 

 facialis ganglion, the nerve pierces the membranous cranium dorsal to 

 the otic capsule. It then turns forward close against the external 

 surface of the membranous cranium, between it and the dorsal trunk 

 muscles, closely accompanying the anterior branch of the first spinal 

 nerve. It passes dorsal to the trigemino-facialis chamber, and dorsal 

 to the buccalis lateralis, as that nerve issues from that chamber. It 

 then immediately turns outward, dorso-posterior to the eye, perforates 

 the anterior portion of the dorsal trunk muscles, probably the first 



