104 Diseases of the Genital Organs 



that is always seriously impaired already, but because the 

 rupture of the cervical walls, with the unpleasant conse- 

 quences attending, leaves an ugly stain on the veterinarian's 

 reputation. If the passage of the canal is very difficult, one 

 should not, as a rule, work at it for more than an hour or an 

 hour and a half, since by that time he will tend to injure the 



Fig. 43. Rupture of the Uterus with Uterine Catheter. Cow. 

 V., Vagina; /, lip of os uteri externum ; 2, first annular mucous fold; 

 j, instrumental rupture in the roof of the horn ; 4, instrumental rupture of 

 the floor of the uterine horn ; 5, mesometrium enormously thickened and 

 inflamed ; 6, cystic corpus luteum with adherent cystic oviduct to the left ; 

 7, median section through cystic oviduct. The veterinarian had killed the 

 cow douching the uterus when the sterility was caused by the inoperable 

 hydrosalpinx. 



tissues unwarrantably if he continues his efforts longer, 

 and, still more important, he becomes fatigued. A fatigued 

 operator is always a dangerous operator. If prudent, he will 

 not accept the attendant risks which he inevitably faces 

 when fatigued. 



When the examiner has succeeded in passing the uterine 

 dilator, the catheter, or other instrument into the uterine 

 cavity, he faces the danger of puncturing the uterine wall, 



