243 



FIG. 178. PIG EMBRYO OF 12.0 MM. RECONSTRUCTION FROM THE TRANSVERSE SECTIONS. Si- 

 To show especially the cephalic nerves, c.i, 0.2, c.$, Cervical nerves, ch.ty, Chorda tympani. curt, < 

 commissure connecting with the jugular ganglion, j. Dien, Diencephalon. ex, Eternal ^ 

 spinal accessory nerve. F, Froriep's ganglion, which in man completely disappe : 

 H, Cerebral hemisphere. ;, Jugular ganglion, from which the small avnicular nerve rv> 

 the glosso-pharyngeus. L, Lens, l.r, Laryngeal branch of the glcsso-pharyngeal nerve, 

 ficial petrosal nerve, md, Mandibular branch of the trigeminal. Mesi'tt, Mesencephalon. .1 

 cephalon. mx, Maxillary branch of the trigt-minal. Myelen, Myelencephalon. n, Xodo'-al g: 1 .^ 

 Nasal pit. Op, Optic cup. oph, Ophthalmic branch of the trigeminal. Ot. 

 ganglion, ph.r, Pharyngeal branch of the glosso-pharyngeal n^rve. rec. Recurrent laryngeal 

 s, Superior ganglion, s-l, Semilunar ganglion. Telen, IV'encepha'on. ty, Tympanic nerve 

 Roof of the fourth ventricle. 3 Oculomotor nerve. 4, Trochli a 5, Trigeminal nerve. 6, A! 



nerve. 7, Geniculate ganglion. 8, Acoustic ganglion. 9, Glo so-pharyngeal nerve. 10. \ 

 ir, Spinal accessory nerve. 12, Hypoglossal nerve. Y, 20 diar s. (Drawn by F. T. Li 



