STRUCT!' RE OF THE CRANIAL NERVES 



549 



forming anastomoses with the vagus, the upper three cervical 

 nerves, and the superior cer\'ical ganghon of the sympathetic 

 system. 



Pyridine-silvei' sections of the roots of the glossopharyngeal 

 nerve showed large and small myelinated fibers, and a few 



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Fin. ^ Si-ction of tlu" accessory ncivc of the dofi. showing bundles of darkly 

 stained uiiiiivelinated fil.ers. Pyridine-silver. Ocu. 0. Ohj. 8. 



unmyelinated fibers. Sympathetic fibers could be followed into 

 the trunk of the IXth nerve between its two gangha. In the 

 trunk of the nerve the small myeUnarted fibers outnumbered 

 the large fibers nine to one. In osmic acid preparations the 

 large fibers measured 9 to 12 micra in diameter, the small 3 to 



