274 Veterinary Medicine. 



the cough infrequent and so weak as to be almost inaudible, be- 

 ing rather like a forced expiration, and the pulse rapid, feeble or 

 imperceptible. The prognosis is favorable in moderate cases sub- 

 jected to early treatment. 



The termination by suppuration is more frequent than in the 

 horse. The general symptoms are ameliorated, appetite and rum- 

 ination return though they remain capricious and irregular, there 

 remains the double action of the flanks, the dry, rough muzzle, 

 the tense inelastic skin, frequently varying in temperature, the 

 beast shivers at intervals, the cough is weak and often repeated, 

 a yellowish, thick discharge takes place from the nose, weakness 

 and emaciation increases and the animal dies in from twenty to 

 thirty days. 



Gangrene of the lung sometimes supervenes and is indicated by 

 similar symptoms as in the horse. In severe and prolonged cases 

 a violent fetid diarrhoea often supervenes and hastens a fatal 

 result. 



The post mortem lesions are similar to those of the horse. 

 The cut surface of the hepatized lung, however, is divided 

 into irregular red spaces by intersecting yellow lines — hence 

 the name of marbled lung^, from a supposed resemblance to 

 that stone. The red spaces represent the pulmonary lobules and 

 the whitish lines the surrounding areolar tissue, which being 

 especially abundant in ruminants and pigs, stands out prominently 

 when infiltrated with the yellowish exudation. There is then 

 nothing specific in this appearance as has been erroneously sup- 

 posed, it is merely the result of the different conformation of the 

 lung in these animals and is always seen in the hepatized lung 

 unless when from extravasation of blood into its substance the 

 redness is rendered uniform. The amount of exudate into the 

 interlobular tissue is, however, never so great as in lung plague. 



The greater frequency of suppuration in the lung of the ox, as 

 well as the greater tendency to tubercular deposit in prolonged 

 cases are additional features in the diseased lungs. 



Treatment. Blood-letting should be employed only with pre- 

 cautions, as in the horse. A saline laxative (i lb. Epsom salts 

 and yi, lb. molasses) may be used with advantage and safety early 

 in the disease, though in advanced stages it may sometimes prove 

 dangerous from the tendency to diarrhoea. If constipation ap- 



