ANATOMY. 



17 



The diameters of the outlet are more equal, being 

 about those of the transverse diameter of the inlet. 

 The cavity is more cylindrical, and less conical than 

 that of the Mare. 



In the Sheep and Goat, ossification occurring at a 



'much later period, allows of the pelvic cavity being 



increased during parturition, and permits of the act 



being performed with fewer difficulties in these 



animals. 



In the Pig, the general conformation of the pelvis 



Fig. 8. 

 Inlet of the Cow's Pelvis. 

 <j b, Supero-inferior, or Sacro-pubic Diameter;, c d, Superior Bis-iliac 

 Diameter; ef. Inferior Bis-iliac Diameter; ei,fh, Oblique, Ilio-sacral 

 or Sacro-iliac Diameters . 



is not unlike that of ruminants. The promontory of 

 the sacrum is more salient, the canal longer, the plane 

 of its anterior circumference more oblique, and the 

 direction of the ischio-pubic symphysis perfectly recti- 

 linear. The cavity is very large in proportion to the 

 size of the young at birth, hence accidents are rare 

 <luring parturition. 



