62 NERVOUS SYSTEM 
Fig. 1.—Diagrammatic Representation of the peripheral Nervous System of a Bird. Ventral 
view. Left side showing the Somatic, right side showing the Visceral Nerves. 
ix. N. glossopharyngeus ; X. N. vagus, C. G. H. P. its distribution to the Carotid, the Heart, 
Lungs, Stomach and Gut; XII.1, Lingual branch and XII.2, Syringeal branch of N. hypo- 
glossus ; Sy. Sympathetic ganglion of the first spinal nerve. 
Fig. 2,—Diagrammatic view of a transverse section through the spinal cord on the level of the 
exit of a typical spinal nerve. 
A.H. and P.H, Anterior or ventral and Posterior or dorsal Horns with ganglia, of the grey sub- 
stance ; in the middle of which is seen the central canal; Sp.G. the Spinal Ganglion of the 
dorsal root of the spinal nerve; Sy.G. the Sympathetic Ganglion; R.d., R.ve., R.vis, 
Dorsal, Ventral and Visceral (or sympathetic) branches of the spinal nerve. 
