DISEASES OF FARM ANIMALS 237 



The disease may last for a long time or only for a 

 few days. In chronic cases the muscles decrease in 

 size in the parts affected. In the dog it is very 

 painful when caused to move and he will howl, 

 or even howl when he thinks he is going to be 

 moved. In sheep it seldom occurs except in young 

 lambs. Pigs are often affected in the legs or back, 

 sometimes becoming paralyzed in the hind legs. 



Rheumatism of the Joints usually shows very 

 rapid swelling, increased heat, and is very painful. 

 The animal is often so lame that it will not put any 

 weight on the foot of the affected limb. 



For horses and cows, treatment consists of local 

 applications of alcohol 50 parts and oil of mustard 

 I part, rubbing it in well; or spirits of camphor. 

 Give at the same time internally i teaspoonful of 

 potassium iodide twice daily and not to exceed 12 

 doses ; or salicylate of soda 4 tablespoonfuls daily. 

 Keep the animal warm and in a well-ventilated 

 stable. Pigs or dogs, according to size, should be 

 given from 4 to 16 grains of salol, also using the 

 above local applications. 



RINGBONE. — A growth of bone on the pastern 

 bone, just above the hoof. It causes lameness when 

 it interferes with the joint or the passage of any of 

 the tendons. Some horses are predisposed to bony 

 diseases from the least injury, while others are not, 

 and in selecting mares for breeding purposes the 

 former should be rejected. This disease resuhs 

 from strains, bruises, or injuries to the cartilage of 

 the joints. When the membrane of the bone or 

 cartilage becomes inflamed there may be great 

 lameness for several months before any enlarge- 

 ment takes place, and it is somewhat difficult to 

 detect. The absence of other diseases of the foot, 

 with some heat in the pasterns, and soreness on 



