_Immunization_ of buffalo and sheep has been secured by making cultures of the microbe in free air at 86° to 90° F. and inoculating the animals with the weakened virus, on three successive occasions with intervals of several days. It induces a transient fever, with no serious phenomena (Oreste and Armanni). A second available method is to pass the virus through the system of the pigeon and inoculate with the pigeon’s blood, on three successive occasions, the animals to be protected. It is manifestly impossible to put such immunizing methods in force on wild deer, and for these probably the best course is to drive them from the infected range, to an uninfected one, having retained them for a few days interval in a confined area, to allow of any already infected animals developing the disease. A similar avoidance of waters running from the infected tract is imperative. _Treatment_, has been unsuccessful. Friedberger failed with hypodermic injection of carbolic acid, and internal administration of salicylic acid. Gal gave subcutem 5 per cent. solution of creolin, and doses of 1½ oz. of the same agent by the mouth. Five buffaloes out of seventeen recovered. Friedberger suggests deep incisions of the swellings so as to admit the air, and treatment of the wounds with strong antiseptics. SEPTICÆMIA HÆMORRHAGICA OF THE SHEEP: LOMBRIZ. Synonyms. Definition. Geographical distribution, Argentina, France, etc. Causes: bacillus; intravenously, etc., youth, verminous affections, low condition. Bacteriology: ovoid bacillus with polar stain, bleached by Gram’s solution, ærobic, nonmotile. Symptoms: Chronic form in summer, diarrhœa, arched back, stiffness, emaciation, flattened wool, segregation, impaired or depraved appetite, shedding wool, anæmic skin, dependent dropsies, sunken eyes, weak small pulse, temperature variable—elevated, nasal and buccal discharge, weakness, paresis, dulness, torpor, lung symptoms, arthritis. Diagnosis: from distomatosis and strongylosis. Acute form with high fever, constitutional disorder, colics, diarrhœa, death in 24 to 36 hours, subacute form. Lesions: black blood, congestions, and general petechiæ. Lungs, liver, kidneys and spleen, congested, swollen. Subacute cases have lighter blood, and lesions. Chronic cases anæmic, blood diffluent, lymph glands enlarged, congested; connective tissues and serous cavities dropsical, gastric, intestinal and hepatic worms, spleen shrunken. Mortality: great in acute, less in chronic. Prevention: segregation, exclusion of all sheep from unknown or suspected flocks, antiseptic dip and quarantine for new purchases, expose a few as a test; cleanliness, disinfectants, avoid watershed from infected lands, wide range, outdoor life, generous diet, remove weak, emaciated, anæmic. Immunization. Treatment. _Synonyms._ Pasteurellosis Ovina. Infectious Pneumo-Enteritis.