748 



Veterinary Obstetrics 



and the fact tliat the cervical spine has been long bent and is 

 quite rigid. 



When the fetus presents transversely, with all four feet in or 

 near the pelvic inlet, the head is usually undiscoverable ; if it 

 can be reached, it is difficult or impossible to bring it into the 

 pelvic inlet. Fortunately vi'e do not wish in these cases to ad- 

 vance it into the inlet or otherwise secure it. 



The indications in instances of wry-neck vary according to 

 conditions. These will be considered under Lateral Deviations 

 of the Head in the Anterior Presentation, on page 765, and 

 under Transverse Ventral Presentation on page 788. 



4. Double and Triple Monstrosities. 



Double monstro-sities occur chiefly in the cow and somewhat 

 rarely in the smaller ruminants and the sow, while in the mare 



Fig. 126. Ga.strodidymus Octipes. (From a photograph.) 

 they are almost unknown. They constantly offer more or less 

 serious obstacles to delivery. The symptoms of double monstros- 

 ities vary according to the particular abnormality and the 

 presentation. 



Commonly, where a fetus is double at one extremity only, it 

 presents by that extremity, and consequently the abnormal por- 

 tion of the fetus is within reach and the diagno.sis can be made by 

 manual exploration. A double face, head, neck, or chest is 



