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ALBERT KUNTZ 



possibility is not precluded that a few cells which wander out 

 from the geniculate ganglion along the path of the large super- 

 ficial petrosal nerve may become incorporated in the sphenopala- 

 tine ganglion. It is improbable, however, that any considerable 

 number of cells is contributed to the sphenopalatine ganglion 

 from this source. 



Man- 



Fig. 13 Photomicrograph of parasagittal section near median surface of man- 

 dibular nerve, embryo of pig 27 mm. in length. Man, mandibular nerve; 0^ otic 

 ganglion; S, semilunar ganglion. 



Otic ganglion 



* The otic ganglion arises in embryos of the pig as an irregular 

 mass of cells of ganglionic and of medullary origin at the median 

 surface of the proximal part of the mandibular division of the 

 trigeminal nerve. Like the maxillary division of the trigeminal 

 nerve, the mandibular division, during the early stages of devel- 

 opment, is composed of a large number of loosely aggregated 

 bundles of fibers which are accompanied by numerous cells of 

 nervous origin. The mandibular nerve, unlike the maxillary, 

 arises by two roots, viz., a sensory root which emerges from the 

 ^'entro-lateral aspect of the semilunar ganglion and a motor root 

 which grows out directly from the wall of the rhombencephalon. 

 These two roots unite immediately peripheral to the semilunar 



