Clean the foot and put it into a bran poultice for several days, then remove any horn that may be pressing on the sore part. If it is at the heel remove the crust with a knife; if it is in front of the hoof rasp it thin. Then probe the opening at the top to find the depth and direction. Put a grain of bichloride of mercury into tissue paper and roll it into a cone and press it down to the bottom of the opening. Treat all the openings in the same way. Put the foot into a bag to protect it from injury and let it alone for three days, then clean out the openings and put in some more of the bichloride of mercury, and so on for two weeks, or until the parts become healthy and the hard swelling has decreased; then make up a bath of chloride of zinc one ounce, cool water one gallon; put the foot into this twice a day for twenty minutes at a time. As soon as the openings are healed blister the coronet with the following: Mix 2 teaspoonfuls of cantharides with 4 tablespoonfuls of lard; repeat in two weeks if necessary. When it is time to put on the shoe and work the horse, a bar shoe will be best. If the animal has much fever in the early stages of the disease give a dose of aloes, and follow this by giving 2 tablespoonfuls of nitrate of potassium twice a day in bran mash. Later in the disease give a teaspoonful of sulphate of iron once a day in bran mash as a tonic. =RABIES.=--See Hydrophobia. =RHEUMATISM.=--A disease which affects the muscles or joints, wandering from one part of the body to another. It affects nearly all animals, including the horse, ox, dog, hog, and sheep. Rheumatism of the muscles is usually due to catching cold, while rheumatism of the joints is often due to some micro-organism. Stiffness, which usually comes on suddenly, is a characteristic symptom. The animal may be able to move only with great difficulty. The joints may crack when moved, the affected muscles are hard and painful to touch, the soreness may shift from one part to another; and the animal sometimes makes a quick recovery, only to be followed by another attack in a short time or perhaps never again. These symptoms may be associated with a rise in body temperature and increased pulse. 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.