THE DEVELOPMENT OF THE CRANIAL SYMPA- 

 THETIC GANGLIA IN THE PIG 



ALBERT KUXTZ 



From the Laboratories of Animal Biology of the State Universily of Iowa 



FIFTEEN FIGURES 



CONTENTS 



Introduction 71 



Observations 73 



Introductory 73 



Trigeminal nerve 73 



Oculomotor nerve 77 



Migrant cells 78 



Ciliary ganglion SO 



Sphenopalatine ganglion 82 



Otic ganglion 86 



Submaxillary ganglion 89 



Conclusions 92 



Summary 94 



Bibliography 95 



INTRODUCTION 



A review of the literature bearing on the de\'elopment of the 

 sympathetic nervous system in the vertebrate series shows that 

 in the general investigations of the sympathetic system the 

 cranial sympathetic ganglia, viz., the ciliary, the sphenopalatine, 

 the otic and the submaxillary ganglia, have received but little 

 attention. The development of the ciliary ganglion has been 

 studied by not a few investigators in connection with the eye- 

 muscle nerves. On the development of the remaining cranial 

 sympathetic ganglia, only fragmentary and incomplete obser- 

 vations have been recorded. 



A systematic review of the literature bearing on the develop- 

 ment of the cranial sympathetic ganglia will not be attempted 



THE JOURNAL OF COMPARATIVE NEUROLOGY, VOL. 23, NO. 2 

 APRIL, 1913 



