DISEASES OF THE GEXEEATI\^E OKGANS. 173 



is rarely required, as the trouble either subsides or abortion occurs. 

 If the laudanum seems to lack permanency of action, use bromid of 

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

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

 given. 



PKEVENTION 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. Not 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 (bluest one) 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, since 

 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 in- 

 jection 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 tliis is best applied to the whole herd. A 1 per 

 cent solution 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 li 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 



