Vascular and Visceral Factors for the Genesis of Emotion. 395 



vagus action on the heart I incline to attribute to mechanical effect on 

 the circulation, secondary to alteration in respiratory movement. The 



- Zero of 

 B.P. 



^> Signal. 



Ill) iiiii| |[||| | |i n||||iiii|iM| i j|jiiH|i|iiiiiiiiii'iiiiiiiliiiiiHi lii -^^^^ 



>Seconds. 



Fig, 1. — Eecord of the arterial pressure in a dog forty-one days after,' spinal 

 transection at tlie 7th cervical segment. The arterial pressure is high and 

 good in spite of the transection, the period of vasomotor shock having passed 

 by. For the short period marked by the signal the noise of the vibrator of 

 an inductorium sounded and was heard by the animal. The point of the 

 signal marked nearly 8 mm. further to the right than did the kymograph pen. 

 The inhibition of the heart is shown by the oscillations on the kymograph 

 trace. The kymograph paper moved from right to left, so that the tracing 

 reads from left to right. The line marked " Zero of B.P. " signifies the height 

 of the zero of the manometer recording the arterial pressure. 



interest of the observation here is that it gives an objective illustra- 

 tion of a disturbance emotional in character occurring in an animal 



