Torsion of the Uterus 



697 



cause such a disturbance of the semi-pendulous organ as to cause 

 it to revolve more or less completely upon its long axis. 



Any movement of the animal which might cause a sudden im- 

 pact upon the gravid uterus, such as a fall, a severe slip, run- 

 ning, jumping, or the jostling which animals get in transit upon 

 railway trains, may accidentally cause the gravid uterus to 

 revolve upon its long axis. 



In one instance observed by us, a mare had the habit of climb- 

 ing up the sides of a large stack of straw, and would then lie 

 down in such a way that she was unable to get up except by 

 rolling over backward. In several instances the owner was com- 

 pelled to turn her over in this way and let her roll down the side 

 of the straw stack before she could regain her feet. When foal- 

 ing time came she died because of torsion of the uterus. 



Fig. 116. The Mechanism of Torsion of the Uterus in the Cow, 

 CoMPi<ETE Revoi,ution .of the Gravid Uterus at 



ABOUT THE 7TH MONTH OF PREGNANCY. 



Lettering same as Fig. 114. 



