They are germ diseases, contracted in purchasing swine which may contract the germs when in transit on cars; by exhibiting at fairs; through persons who have visited infected herds; through the feet of dogs and birds to which the germs may have adhered; through the water of an infected pond or stream. The most dangerous source of infection by far is coming in touch with diseased animals. Reduced stamina and filthy quarters favor the spread of these diseases. ~Hog Cholera~ _Symptoms._--Dullness, loss of appetite or depraved appetite and a disposition to lie down; constipation or diarrhoea; stiff gait; red spots or blotches discernible about the ears and under the neck and belly; in some instances there is difficulty in breathing. _Treatment._--Authorities agree that there is no known cure for real hog cholera. Preventive measures, therefore, are of vital importance. Pratts Disinfectant should be used frequently and to build up the general health of the hog, giving it full disease-resisting power, Pratts Hog Tonic should be added to the ration. Besides, it is a valuable tonic and fattener. ~Swine Plague~ _Symptoms._--Extensive inflammation of the lungs, by which it can be distinguished from hog cholera. There is coughing and labored, painful and oppressed breathing. It frequently comes as a pneumonia or an inflammation of the lungs and pleural membrane. The animal is in a sleepy and even comatose condition much of the time. If it walks it staggers. The skin reddens in a marked degree and the bowels become constipated. This disease, though not nearly so common as hog cholera is usually very fatal. Preventive measures, as indicated for hog cholera, are all important. Use Pratts Hog Tonic as directed and disinfect with Pratts Disinfectant. ~Thumps~ _Cause._--Too liberal feeding and lack of exercise, resulting in poor digestion. The diaphragm contracts suddenly at irregular intervals, thus giving the name to the disease. The pig becomes unthrifty and stunted. If the sow is a liberal milker, nursing pigs may be affected. Treatment is usually preventive, consisting of exercise and careful feeding, Pratts Hog Tonic being added to the feed. ~Tuberculosis in Swine~ The losses from this disease are beginning to assume enormous proportions. It results largely from swine drinking the milk of tuberculous cattle. _Symptoms._--Digestive disorders, such as diarrhoea and vomiting; a stunted condition and a staring coat and breathing more or less labored. _Treatment._--There is no positive cure for this severe disease, but good sanitation is the best preventive. Use Pratts Disinfectant freely and maintain health and vigor by regularly using Pratts Hog Tonic. The importance of testing heads of cattle that may be affected with tuberculosis is thus further emphasized. ~Worms~