>_L7 



OF VETERINARY MEDICINE. 24 



show his trouble by putting his leg out to one side in a peculiar 

 manner when stepping over. In backing out of the stall, he may 

 take a few steps all right and then be unable to go further. The 

 tail may shiver as well as other parts. In severe cases in horses 

 spasms severe enough to throw them to the floor come on occa- 

 sionally. Some horses with this disease are unable to back at 

 all, but can go ahead. Chorea is liable to become chronic and 

 all chronic cases of this disease are without exception incurable. 



There is no special lesion revealed by the post mortem, ex- 

 cept that in long-standing cases we find thickening of the arach- 

 noid, effusion into the arachnoid space and hardening of the 

 outer layer of the cord. In acute cases in the dog the medulla 

 show softening. 



Treatment. — Chorea is very unsatisfactory to treat. In severe 

 cases it is incurable. Constitutional tonic treatment is about all 

 that can be done for the animal. Give a liberal diet, correct the 

 hygiene and avoid fatigue. For drugs give iron, zinc, copper and 

 in some cases small doses of strychnine. You can combine with 

 these cinchona and gentian. In case of whining dogs you can 

 relieve the distress by giving valerian fluid extract with a min- 

 eral tonic. 



Give Fowler's solution in gradually increasing doses till the 

 maximum dose is reached, then reduce the dose gradually to the 

 minimum, then up again, and so on for two to four weeks. 

 Nitrate of silver in bread pills is very good; give for a week 

 and alternate with sulphate of copper. Recoveries are rare. 



DISEASES OF THE REPRODUCTIVE SYSTEM. 



The diseases of the reproductive system are not so common 

 in the lower animals as in the human. There are only two speci- 

 fic diseases, the malignant and simple pox. 



SIMPLE POX. 



In its nature simply pox is a phlyctenoid eruption. The 

 eruptions occur on the vulva and extend into the vagina. It is 

 never seen in the sheep, pig or dog. It is common in the human 



