Septic Diseases of the Lungs in Goats. 97 



Identity. The identity of the disease in different epizootics has 

 been questioned . Thus Nocard and Leclainche doubt the identity 

 of the pleuro-pneumonia that the latter investigated in France, 

 as also that observed by Pusch, Schtitz and Storch in Germany, 

 together with the disease of Algerian goats known as bou frida. 

 In these cases and in those seen in Cape Colony and India the 

 pulmonary hepatization appears to have been more marked than 

 in the American cases, Hutcheon, indeed, beheved that he was 

 dealing with the lungplague of cattle. But the variety and graHe 

 of lesion may be largely climatic. Kven the lung plague of the 

 ox differs greatly in our drier American climate in winter, from 

 the same disease in Western Europe. Then the goat disease is 

 so constantly traceable and even confined to the Angora, shows 

 so uniformly the same microbiology, presents such similarity in 

 its lesions, symptoms, duration and mortality, and agrees so re- 

 markably in the genera susceptible, that the burden of proof 

 should be upon the person who denies the identity of the malady 

 in any two outbreaks. 



A variation even in virulence may depend on the environment 

 of a particular herd or the state of the system invaded. Thus 

 the addition of lactic acid to the culture injected, killed in a few 

 hours, so that habitual exertion with the accumulation of sarco- 

 lactic acid may determine a specially violent type. So with other 

 cases of auto or fodder poisoning and of complex infection. 



Symptoms. In the tardiness of its course, the diarrhoea, the 

 cough, the great emaciation and weakness, this disease strongly 

 suggests eritequi, or a destructive parasitism. But worms are 

 usually altogether absent and mature cattle do not suffer from 

 exposure to the contagion. In the early stages there is no visible 

 disorder. Then the goat becomes listless, languid, droops its 

 head, ears and eyelids, and lags behind the flock. He mopes 

 around with arched back and head bent toward the. sternum, but 

 still eats and ruminates fairly well. The temperature is highest 

 at the start (104" to 107° F. ) and may later become subnormal 

 (99.7° F. ). Snuffling and nasal discharge are common. Cough 

 is easily roused by percussion of the chest. Blowing and crepi- 

 tant r^les may be detected on auscultation. Sometimes there is 

 distinct flatness of sound over given areas when percussed. In 

 the advanced stages there may be marked dyspncEa, the goat 



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