144 



DR RUTHERFORD ON THE INFLUENCE OF THE VAGUS 



EXPERIMENT LI. — Strong Rabbit which had fasted for eighteen hours. Canula in 



Carotid Artery. Trachea open. 



Time. 



Pulse in 10". 



Mean pressure in inches 

 ofHg. 



General Notes. 



4- 6' 



44 



4-5 





8' 







8 milligrammes atropia sulphate 

 given. 



9' 30" 



46 



4-6 





11' 45" 



47 



4-5 





12' 







Both depressors divided. 



13' 15" 



50 



5-8 





14' 5" 



49 



5-6 





16' 







Blood coagulated. Canula cleaned. 



20' 



45 



52 





21' 20" 







Both vagi divided. 



24' 



46 



5'2 





28' 



45 



5-2 





30' 



46 



53 





Result. — Section of vagi followed by no change in pulse or pressure. Sec- 

 tion of superior cardiac branches of vagi followed by increased pressure and 

 temporary acceleration of pulse. 



EXPERIMENT LII. — Strong Rabbit which had fasted for twelve hours. Canula in 



Carotid Artery. Trachea open. 



Time. 



Pulse in 10". 



Mean pressure in inches 

 ofHg. 



General Notes. 



3-35' 



40 



3-8 





36' 







8 milligrammes atropia sulphate 

 given. 



30" 



50 



3-5 





38' 



50 



37 





40' 







Both depressors divided. 



45" 



49 



36 





43' 



50 



37 





44' 







Both vagi divided. 



45' 



54 



4d 





46' 20" 



52 



39 





49' 10" 



50 



3-7 





53' 



48 



3-8 





fi esu lt. — Division of vagi followed by a transient rise in pressure and pulse. 

 This was probably due to excitement, seeing that it soon disappeared. 



