204 BOVINE OBSTETRICS 



intestines, but removed the presenting limbs. Extraction 

 could then always be accomplished by the two remaining legs. 



Perosomus elumbus (fig. 22) may give rise to dystokia. In 

 this monster the lumbar vertebrae are wanting. It is com- 

 pletely covered with skin, only the spinal column is not 

 continuous. Ruder also describes such a case. 



Of the compound monstrosities, I mention the diprosopta 

 (fig. 23), the face of which is more or less double. On exami- 

 nation, one may at first imagine to deal with twins. But when 

 the head is pushed back the other follows the movements and 

 the skull common to both, and the actual state of affairs is 

 recognized. 



Fig. 23.— Dipro^opus. 



Treatment — A hook is fastened into the internal canthus 

 of one eye, and attempts are made to bring the double head in 

 an oblique direction through the pelvic canal. As a rule the 

 fore leg«, which also occupy the parturient passage, interfere 

 with this operation. After removing them subcutaneous!? the 

 head is mostly able to pass. Should it still be unable to glide 

 through the pelvic canal, the chain saw easily and quickly cuts 

 through t lie skull. 



The dicephalua (tig. 24) may be treated in the same manner 

 as the diprosopus. In case tin 1 , division extends far backward, 

 partial embryotomy may be resorted to. 



