6o VETERINARY OBSTETRICS 



Compressed Yeast Treatment. 



The results obtained from the yeast treatment hav- 

 ing proved so flattering in the case of the human female, 

 Dr. A. T. Peters, of the Nebraska Experiment Statior, 

 conducted experiments with it in cows that had aborted, 

 and with encouraging success. The following is the 

 method employed : 



In cows that have aborted, the placental membranes 

 are removed immediately, or as soon as possible. The 

 entire vaginal canal is then irrigated with a lukewarm 

 3 per cent, solution of potassium permanganate, after 

 which a solution of yeast is injected into the vagina. 



The yeast solution is made as follows : Mix a cake 

 of ordinary compressed yeast into a paste with a small 

 quantity of warm water, and allow it to stand in a 

 mioderately warm place for about twelve hours. Then 

 stir in one to one and one-half pints of freshly-boiled 

 lukewarm water, and permit the mixture to stand for ten 

 or twelve hours. It is then ready for use, and the 

 whole quantity should be injected into the vagina of 

 the animal. 



Before service, the vagina is first washed out with 

 soapy water, and the yeast solution injected as previ- 

 ously described. It is recommended that the injection 

 be made at the first sign of the period of oestrum, and 

 the animal bred toward the end of the period. 



Chapter VI. 

 DYSTOKIA, 



Among the lower animals, and, in fact, among all 

 females, a great many of the troubles and abnormal 

 conditions met with at parturition, can be immediately 

 traced to the habits, laws and fashions of domestica- 



