364 



EXPERIMENTAL PHARMACOLOGY 



vessels and tissues holding the uterus down. Use the great- 

 est care not to injure the blood-vessels or nerves going to 

 the uterine horns both of which are brought together at the 

 upper ends. These ends are now tied with a thread which 

 is passed through a metal tube as shown in Fig. 306. 



Petrolatum 

 \inuidum 



Metal tube 



Bifurcation of 

 uterus 

 Class tr metal 

 mnula In 



Fig. 306. Arrangement of animal and apparatus for recording uterine contractions 

 according to the method of Barbour. (See Jour, of Pharm. and Exper. Therapeutics, 

 1915, vii, p. 547.) 



The tube is lowered into the abdomen over (around) the 

 uterus, the two horns of which are pulled up as illustrated. 

 The tube is placed down in position (be sure the bladder 

 which should be empty is not caught inside the lower end 

 of the tube) and the abdomen is closed air tight with hemo- 



