59^ ^Journal of Comparative Neurology and Psychology. 



Fig. 24. 



Fig. 25. 



Fig. 24. A longitudinal section of the wall of the aorta in a horizontal section of the whole head, 

 showing two fiber endings. Magnification, 250 diameters. 



^*0 Fig. 25. Endings from the ventral sympathetic trunk of the left side in the inferior jugular vein, 

 inf. jug. Magnification, 75 diameters. 



