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 
Fic. 8. 
INLET OF THE Cow’s PELVIS, 
a 6, Supero-inferior, or Sacro-pubic Diameter; ¢ d, Superior Bis-iliac 
Diameter; ¢/, Inferior Bis-iliac Diameter; e7, 4, Oblique, Tlio-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 
during parturition. 
