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CYCLOPEDIA OF LIVE STOCK AND COMPLETE STOCK DOCTOR. 



With regard to the anterior and posterior presentations, Rainard has 

 selected the fixed points as follows : for the first he has taken the spinous 

 processes of the dcrsal vertebrae in the region of the withers; for the 

 second, the lumbar vertebra?. For the positions in the other two presenta- 

 tions he has not been so fortunate in a designation, in the opinion of 

 Saint-Cyr, who has very judiciously proposed others which are more ex- 

 plicit and comprehensible. The latter gives the various positions which 

 should be recognized in each presentation, as follows : 



Anterior Position. — The chest of the fa?tus is at the pelvic inlet, and 

 it is desired to make known what relation this part has to the pelvic cir- 

 cumference. The determinate point on the fcrtus is the vertebras of the 

 withers; and these may be in rehition with the sacrum above, the pubis 

 below, the right ascending branch of the ilium on the right side, and the 



ANTERIOR presentation: DOWNWARD DEVIATION OF THE HEAD. 



left ditto on the left. From this we have four positions, named by 

 Saiut-Cyr, as follows : 



1. Vertebrosacral Position. — This is the most favorable and the most 

 frequent of all, and is said to be the only natural position. The vertebne 

 of the foetus correspond to those of the mother, its withers touching the 

 sacrum of the latter, the belly corresponding to the abdominal parietes, 

 and its sternum to the pubis. This is sometimes named the 'first anterior 

 position. 



2. Vertehro-pubic Position. — This is exactly the inverse of the first: the 

 foetus lying on its back, its withers towards the pubis, and the sternum 

 opposed to the sacrum of the female. This is also named second anterior 

 position. 



3. Left Vertebro-ilial Position. — The foetus lies in the right flank, its 

 head to the left side of the mother, the neck being in the same direction, 



