ACTION OF DIGITOXIN 



411 



to avoid killing the animal too quickly (some preparations 

 are exceedingly poisonous). As soon as you determine the 

 tolerance of the animal to the solution make larger and 

 more frequent injections, watching carefully for the marked 



Fig. 332. Tracing showing the blood-pressure and respiration of a dog under the 

 influence of digitoxin at the time when the second stage passed over into the third stage. 

 Several small doses of the drug were given from time to time to bring on this action. 



slowing of the second stage to appear. When once you see 

 clearly that this slow stage is beginning then stop all in- 

 jections and wait for the drug to act. There will then prob- 

 ably be sufficient drug in the animal to cause death and it 



