234 BOVINE OBSTETBICS 



3. Dorsal Position. — The back of the calf is turned toward the 

 belly of the mother, the anterior or posterior extremi- 

 ties occupy the parturient passage, offering some of the 

 above deviations. 



II. Tbansvekse Pbesentation. 



The abdomen or back of the calf in this presentation lies 

 toward the pelvic inlet. For this reason an abdominal 

 transverse presentation and a dorsal transverse pre- 

 sentation are recognized. 



In the former the abdomen is opposite to the inlet ; 

 in the latter the back of the calf presents itself trans- 

 versely in front of the pelvic inlet. 



In the abdominal transverse presentation, one or 

 more legs may enter the pelvic canal, sometimes all 

 four legs ; should the head also enter, the hindquarters 

 descend on account of its weight, and the transverse 

 presentation changes into the longitudinal presenta- 

 tion, in consequence of which the hind limbs and an- 

 terior extremities lie in the so-called dog-sitting 

 position (Harms). 



I— LONGITUDINAL PEBSENTATION. 



1. — Abdominal Position. 



(a) abnobmal position of one fobe leg. 



The /ore legs ivitJi ilie flexed car-pus against the symphysis. 



Causes. — Insufficient dilatation of the cervix uteri and 

 early rupture of the water-bag. Traction by the attendant 

 while exploring on the normally presented fore leg before com- 

 plete rotation of the calf took place. 



Diagnosis. — On exploration the normally presented fore leg 

 and head are recognized in the pelvic canal ; the bent knee lies 

 opposite the pelvic inlet or below it. By gliding downward 

 along the flexed limb, the fetlock and claws are felt. When 



