Lung Plague of Cattle. 599 



nomena ; from emphysema by the fever, absence of drum-like tympany, and 

 presence of consolidation ; from aspergillosis of the lung by the fever, more 

 rapid progress and extended consolidation, by the harmlessness to birds, by 

 the absence of aspergillus from expectoration and lung ; from insolation by 

 the absence of the causes of heat stroke, of the implication at once of a 

 number of exposed animals, of the excessive hyperthermia, the brain symp- 

 toms and sudden deaths. Treatment : a poor economy, to be punished 

 when extinction is attempted. Prevention : importation under three 

 months quarantine, surveillance of three months more in case of single ani- 

 mals ; applied to lung plague countries and those adjoining ; disinfect cars 

 and boats that have been used in lung plague country ; exclude hay ar.d 

 fodder from lung plague country ; also litter, bags, head ropes, horns, hoofs, 

 hides, hair. To extirpate : stop all ingress of possibly-infected cattle, stop 

 movement of cattle, prohibit common or unfenced pasturage, kill without 

 indemnity in case of violation, rtcord all cattle, make necropsy of all dead, 

 kill and pay for all infected herds, disinfect all infected premises and things, 

 use horses in removing and plowing under manure. Unaided owner may : 

 breed all his stock, in buying bull quarantine him, allow no intercourse be- 

 tween his herd and others, get new cattle from herds on!}' that have had no 

 illness nor losses for a year, and no exposure, and bring by thoroughly safe 

 route, in disinfected cars or boats, then quarantine, under special attendants. 

 Immunization ; by a first attack, inoculation in tail, intravenous, of steril- 

 ized exudate. Conditions permitting and forbidding immunization. 



Synonyms. Bovine Pleuro-Pneumonia, Contagious Pleuro- 

 pneumonia, Peripneumonie (Fr.), Lungenseuche Vieseuehe 

 (Ger. ), Pneumosareia, Peripneumonia Exudativa, Epizootic 

 Pleuro-Pneumonia, Pulmonary Murrain, Slijmlongziekte (Dutch ), 

 Pulmonea dei Bovina (Ital.), Phush phush pirdaho, Pheepree 

 (Bengalee). 



Definition. An infectious febrile disease, occurring casually 

 in cattle only, so far as known, and characterized by a prolonged 

 incubation (10 to 90 days, a tardy insidious onset, inflammation 

 of the bronchia, lungs and pleurae, a profuse exudation into the 

 interlobular connective tissue and chest, a very extensive area of 

 consolidation, pulmonary infarction, and sequestra. 



History. It is difficult or impossible to identify this disease 

 among the various animal plagues in ancient times. Yet when 

 lesions are given it may be admitted in different cases. Aristotle, 

 writing 350 years before Christ says "the cattle that live in herds 

 are subject to a malady which causes the breathing to become hot 

 and frequent. The ears droop and they cannot eat. They die 

 rapidly and the lungs are found spoiled." Here the facts that 



