HISTOLOGY OF THE SENSORY GANGLIA OF BIRDS^ 



E. VICTOR SMITH 



FORTY FIGURES 



CONTENTS 



I. Introduction , 252 



II. Brief comments on the literature 252 



III. Observations 255 



A. Sensory ganglia of the chick 256 



1. Spinal ganglia 257 



2. Cerebral ganglia 258 



a. Ganglion of the ninth nerve 258 



b. The vagus ganglion 259 



c. The Gasserian ganglion 260 



B. Sensory ganglia of the owl 264 



1. Spinal ganglia 264 



2. Cerebral ganglia 265 



a. The vagus ganglion 265 



b. The Gasserian ganglion 266 



c. Ganglion of the auditory nerve 266 



C. Sensory ganglia of the goose 267 



1. Spinal ganglia 267 



2. Cerebral ganglia 268 



a. Ganglion of the ninth nerve 268 



b. The vagus ganglion 268 



c. The Gasserian ganglion 270 



D. Sensory ganglia of the duck 271 



1. Spinal ganglia 271 



2. Cerebral ganglia •. 272 



a. Ganglion of the ninth nerve 272 



b. Vagus ganglion of the mallard 272 



c. Gasserian ganglion of the domestic duck 273 



d. Gasserian ganglion of the mallard 274 



E. Sensory ganglia of the turkey 274 



1. Cerebral ganglia 274 



a. Ganglion of the ninth nerve 274 



b. The vagus ganglion 274 



c. The Gasserian ganglion 275 



^ Contribution from the Zoological Laboratory of Northwestern University 

 under the direction of William A. Locy. 



251 



THE AMERICAN JOURNAL OF ANATOMY, VOL. 14, NO. 2 



