OF VETERINAKV MEDICINE. 249 



month or so depigmentation takes place in the skin, — on the in- 

 side of the thighs, scrotum, vulva, and elbow. The depigmented 

 patches are about the size of a quarter to the size of a man's hand 

 and turn white. The depigmentation is a progressive process. 

 The hair gets shabby and the animal wabbles more and more. 

 As weakness develops the legs swell and in 12 to 16 weeks a 

 profuse muco-purulent discharge takes place from the nose. The 

 scrotum and testicles may be very large. 



In the mare the mammary glands swell and the clitoris and 

 mucous tissue are protruded. The mucous membrane of the 

 clitoris is of yellowish color. The subacute runs into the chronic. 



Although some animals appear to recover they should be re- 

 tired from breeding, because it always revives the disease. 



The only peculiar morbid anatomy is in the spinal cord, the 

 locomotor ataxia is the same as that of other diseases. 



Treatment. — Dourine is a contagious disease ; therefore de- 

 stroy all the animals that are affected. If necessary quarantine 

 them. The old quarantine laws allowed the animals to go back 

 into the stud after three years, but it was found that they gained 

 no results, for stud work revived the disease. 



URETHRITIS. 



In stallions this condition comes always from serving mares 

 that are affected with leucorrhoea. It is characterized by pus, 

 but no germ has been isolated as has been done in the human. 



Micturition is painful. 



Retire the animal for a few days. Give a purgative and saw 

 palmetto. Use the zinc sulphate solution two grains to an ounce 

 of water as an injection twice a day. 



Bull Burnt is similar to urethritis but it affects the covering 

 of the penis rather than the uretha. It is usually the result of 

 too frequent copulation. Inject into the sheath a solution of ace- 

 tate of lead — half an ounce to the pint of water. Manipulate 

 the part and repeat night and morning. 



Burnt Dog is a foulness of the sheath from the accumula- 

 tion of natural secretion in the sheath, which produces a catarrhal 

 discharge. Use the same treatment as for the preceding. 



