CONTENTS 



Page 



I. Introduction i 



General considerations i 



Acknowledgments 6 



II. Review of the literature 6 



III. Material and methods g 



Histological procedure 9 



Reconstruction techniques 13 



IV. Observations 14 



Gross anatomy of the cephalic nervous system 14 



Cephalic nerves 18 



Histology of the cephalic nervous system 22 



V. Discussion 2g 



The ganglia 29 



The cephalic nerves 30 



Cell types 32 



Nerve tracts 32 



The Fahlander-Ferris controversy 32 



Concluding comments 35 



VI. Summary 36 



Abbreviations used on the figures 37 



References 38 



