Pelvic Ttiviors and Calluses 191 



pelvic walls and the vagina, which may interfere with fer- 

 tility — not so frequently with fertilization as with parturi- 

 tion. These should always be observed carefully and pre- 

 cautions taken against impending difficulty. If the tumors 

 are irremovable, the animal should not be bred; if she is 

 pregnant, artificial abortion may be performed, in the early 

 stages, or, if the fetus is of value, pregnancy may be per- 

 mitted to continue to full term and the young removed by 

 hysterotomy. 



A commoner interference with reproduction consists of 

 calluses resulting from fractures or other injuries to the 

 bony girdle of the pelvis. Pelvic fractures with large cal- 

 luses are especially common in nymphomaniac cows, and 

 sometimes unfit them for breeding. Even if the nympho- 

 mania can be overcome, where such injuries are encoun- 

 tered during examination, the veterinarian should judge 

 carefully of their importance and act accordingly. If they 

 are of such a character as to prevent parturition, the ani- 

 mal should not be treated for the disease of the genital or- 

 gans, but be sent to slaughter. Exceptions might be made 

 in highly valuable cows, which, if the nymphomania or other 

 disease is curable, might be bred and delivered at full term 

 by hysterotomy. 



