author's abstract of this paper issued 



BY the bibliographic SERVICE, MAT 29 



THE IMOTOR NUCLEI OF THE CEREBRAL NERVES IN 



PHYLOGENY— A STUDY OF THE PHENOMENA 



OF NEUROBIOTAXIS 



III, REPTILIA 



DAVIDSON BLACK 



Central Institute for Brain Research, Amsterdam, Holland, and the Anatomical 

 Department, Peking Union Medical College, Peking, China 



TWELVE FIGURES 



CONTENTS 



Introductory 61 



Motor roots and nuclei in Damonia subtrijuga 62 



Nerve XII 62 



Nerve X 63 



Nerves VII and IX 67 



Nerve VI 70 



Nerve V 72 



Nerves III and IV 75 



Discussion 78 



1. Hypoglossal complex 78 



2. Visceral motor nuclei 84 



Vago-accessorius complex 84 



Motor VII-IX complex 86 



Motor V nucleus and root 89 



3. Eye-muscle nerves 91 



Nerve VI 91 



Nerves III and IV ' 92 



Conclusion 94 



Literature cited 96 



INTRODUCTORY 



The following communication represents part 3 of a series of 

 papers dealing with the phylogeny of the cerebral motor nuclei 

 in vertebrates, the first two parts of which were published in 

 1917 (4, 5). The delay in the progress of the investigation since 

 that time has been unavoidable. 



61 



THE JOURNAL OF COMPARATIVE NEUROLOGY, VOL. 32, NO. 1 



