32 VETERINARY OBSTETRICS. 
usually much more easily than if standing idle for 
some time previous. 
Fic. 14, 
Fatus oF MARE AND ITS ENVELOPES. 
A, Chorial Sac; C, Amniotic Sac withdrawn from the Allantoid Cavity, and 
opened to expose the Fcetus; D, Infundibulum of the Urachus; B, 
Allantoid portion of the Umbilical Cord; 4, Portion of the External 
Surface of the Chorion destitute of Placental Villosities, and corre- 
sponding to the point of insertion of three pediculated Hippomanes. 
A Mare with her first foal generally carries it for 
a shorter period than her next and successive ones. 
