THE FEMALE GENERATIVE ORGANS. 



439 



excised by means of tlie jagged-edged knife, or removed 

 with the ecraseur. Only one incision is generally neces- 

 sary, for both ovaries can be reached through it. This 

 may preferably be made on the left side. After the 

 operation has been completed, the wound being closed 

 in the usual way, the patient must be kept quiet and 

 fed on nourishing food, and the bowels kept open. Un- 

 toward results seldom follow this operation. Removal of the 

 ovaries through the vaginal wall has been tried with success. 

 Menstruation of the cow is associated with the escape 

 of the ova from the ovaries, being accompanied by that con- 



FiG. 92.— Maternal and foetal cotyledons of the cow. A. Pedicle of the 

 maternal cotyledon. b. Maternal cotyledon. c. Fcetal cotyledon 

 D. Plticental villi. B. Chorion. (From Fleming's 'Veterinary Ob- 

 stetrics.') 



dition of excitation known as CEstrum, or Heat. " Kahleis, 

 Fuchs, Spinola, Numan, and others, have observed evident 



