206 



EXPERIMENTAL, PHARMACOLOGY 



EXPERIMENT XXX. 



Heroine or Codeine. (Spinal Dog: Blood-pressure, Lung 

 Volume and Bladder Contractions.) 



1. Examine carefully the apparatus shown in Figs. 197 

 and 198. Arrange a dog (ten or twelve kilos) for record- 



Fig. 197. Mercury bull). 



ing blood-pressure. The injecting burettes contain heroine 

 (one cubic centimeter equals five milligrams) and adrena- 

 line (1:10,000). Arrange for artificial respiration. 



Open the abdomen and pick up the bladder. Insert into 

 it at the urachus a glass tube connected with a mercury 



