DISEASES OF THE GENERATIVE ORGANS. 169 



potassium, or, better, extract of Viburnum prunifolium (40 grains), 

 at intervals of two or three hours until five or six doses have been 

 given. 



PREVENTION AND TREATMENT OF CONTAGIOUS ABORTION. 



So far as this differs from the treatment of sporadic abortion, it 

 consists in separation and the free use of germicides or disinfectants. 



(1) Separate all aborting cows in isolated building, yard, and pas- 

 ture, allowing no other cows to have access even to their manure, 

 liquid or solid. ISTot even breeding ewes, goats, sows, rabbits, or 

 mares should be allowed to go from the isolated to the noninfected 

 premises. Separate attendants and utensils are desirable. 



(2) Scrape and wash the back part of the stall and gutter and water 

 it with a solution of 5 ounces sulphate of copper (bluestone) in 1 gal- 

 lon pure water. Repeat this cleaning and watering at least once a 

 week. This should in all cases be applied to every stall where an 

 aborting cow has stood and to those adjacent. To treat the whole in 

 the same way would be even better, as it is impossible to say how 

 many of the cows harbor the germ. This is the more needful as that 

 in one to three years, if the aborting cow is kept on, she becomes 

 insusceptible and carries her calf to full time. A cow may therefore 

 be infecting to others though she herself no longer aborts. 



(3) Dissolve 1 dram corrosive sublimate, 1 ounce each of alcohol and 

 glycerin, and shake this up in a gallon of water, to use as an injection 

 into the vagina and a wash for the parts about the vulva and root of 

 the tail. Being very poisonous, it should be kept in a wooden barrel 

 out of the way of animals or children. Every morning the vulva, 

 anus, back of the hips, and root of the tail should be sponged with this 

 liquid, and this is best applied to the whole herd. A 1 per cent solu- 

 tion of carbolic acid is a good substitute. 



(4) When any case of abortion has occurred the fetal membranes . 

 must be removed by the hand without delay, and, together with the 

 fetus, destroyed by burning or boiling, or buried deeply, and the stall 

 should be cleansed and watered freely with the copper solution. Then 

 the womb should be washed out with 11 gallons of the corrosive 

 sublimate solution injected through a rubber tube introduced to the 

 depth of the womb and with a funnel in its outer elevated end. This 

 should be repeated daily for a week. In the case of the other non- 

 pregnant cows of the herd one injection of the same kind should be 

 made into the vagina, after which they need only have their external 

 parts and tail washed with the solution daily. 



(5) Do not breed aborting cows for two or three months, then use a 

 separate bull, injecting his sheath and washing his belly before and 

 after each service with the carbolic-acid solution. Exclude all out- 

 side cows from service by the regular herd sire and, in purchasing 



