68 



BO¥INE OBSXETEICS 



After the anterior extremities have passed the pelvic inlet 

 and the head is born, the uterus contracts upon the hind 



N Wwf — i?^ 4 



quarters, and, with the aid of the abdominal compressors, the 

 foetus is expelled. 



The genital canal offers two parts where the passage of 



