PLATE 7 



EXPLANATION OF FIGURES 



29 Human embryo, 14 mm. in length, 144—5—2 — 2X240. Sagittal section 

 showing cellular ramus (CS) connecting otic (OG) and sphenopalatine (SPG) 

 ganglia. 



30 Human embryo, 14.5 mm. in length, 1267—8—2—3X315. Section through 

 motor root of trigeminal nerve {MRV) showing migrant medullary cells. 



31 Human embryo, 13 mm. in length, 485—13—8—3X120. Section showing 

 primordium of submaxillary ganglion {SMG). lin, lingual nerve. 



228 



