352 



PHYSIOLOGICAL ACTION OF CONDURANGO. 



The animal was then killed. 



JExperiment XV I. — A cannula was placed in the trachea of a 

 rabbit and connected as in the previous experiment with one of 

 Marey's levers by a T-tube and a stopcock. 



The movements of the registering lever were increased or 

 diminished according to the greater or less resistance which the 

 stopcock opposed to the entrance of air into the T-tube. 



A second cannula was placed in the left carotid and connected 

 with a kymographion which registered the blood-pressure. The 

 number of cardiac pulsations was ascertained by counting the 

 undulations which they produced in the blood-pressure. 



The Condurango was injected through a cannula in the 

 jugular vein. 



