274 



Dr. C. E. Beevor and Prof. V. Horsley. [June 7, 



(ordinarily regarded as a branch of the Xllth cranial), wben 

 stimulated above its junction with the branch from the Ilnd cervical 

 nerve, produced contraction of the sterno-hyoid and sterno-thyroid 

 muscles, and where the current employed was weak there was no 

 contraction of the omo-hyoid, but this movement was superadded on 

 increasing the strength of the current. 



We ought here to mention the opinion held by Volkmann (loc. cit., 

 infra) that fibres ascend to the hypoglossal from the spinal rami com- 

 municantes by the descendens noni. 



Illrd Cervical Nerve. — On stimulating the branch from this nerve, 

 which forms the Ilnd cervical nerve just before the ansa thus formed 

 is connected to the descendens noni, there was no action seen in the 

 depressors of the hyoid bone ; it therefore seems certain that these 

 muscles are supplied with motor fibres solely by the branches from 

 the 1st and Ilnd cervical nerves. 



Summary of Results. 



Cranial nerves. 



Eeference. 



Views previously 

 held. 



Authors' views. 



V. Trigeminus. 

 VII. Facial. 



1 



All authors. 



Hermann, 'Physi- 

 ology.' 



Quain's 'Anatomy,' 

 9th edition. 



Ellis' 'Anatomy,' 

 10th edition. 



Bastian, ' Cerebral 

 and Bulbar Pa- 

 ralysis.' 



Hughlings Jack- 

 son. 



Volkmann, 'Miil- 

 ler's Archiv,' 

 1840, p. 475. 



Hein, ' Muller's 

 Archiv,' 1844, p. 

 297. 



Muscles of mastica- 

 tion. 



Muscles of face, sty- 

 lo-hyoid, levator 

 palati, digastric 

 (posterior belly), 

 stapedius, pla- 

 tysma myoides. 



Muscles of face and 

 of tympanum, the 

 levator palati, 

 azygos uvulae 

 (through the 

 large superficial 

 petrosal nerve). 



" Supposed " to send 

 motor fibres to 

 Meckel's ganglion 

 and so to palate. 



Expresses great 

 doubt as to the 

 superficial petro- 

 sal nerve supply- 

 ing the soft palate. 



Vide Xlth nerve. 



No movement of soft 

 palate. 



No movement of soft 

 palate. 



Ditto. 



In agreement, ex- 

 cept with, re- 

 gard to the 

 levator palati, 

 for which see 

 Xlth nerve. 



