94 THE FARM DOCTOR. 



DROPSY OF THE LUNG. 



This is mainly a result of valvular and other diseases of the 

 heart. To percussion and auscultation it gives nearly the same 

 symptoms with pneumonia, but there is an entire absence of 

 fever. The co-existing heart-disease also serves to reveal its 

 true nature. Its cause being usually incurable, it terminates 

 fatally in the majority of cases. Treatment must be altogether 

 directed to the disease of the heart. 



APOPLEXY OF THE LUNG. 



In the lower animals extravasation of blood into the substance 

 of the lung is usually the result of profound alterations in that 

 liquid, as in Malignant Anthrax, Purpura Hcemorrhagica, 

 Typhoid Fever, or Intestinal Fever. A portion of the lung 

 tissue gives way, and the blood escaping raises the membrane 

 covering it (pleura) from a half to three inches above the 

 natural level. The extravasation has the appearance of a fine 

 jelly, and often preserves the shape of the pulmonary lobules — 

 a cone with the apex turned in. Being usually a complication 

 of another disease, treatment must be directed to that rather 

 than the local lesion. 



PLEURODYNIA. 



This is a term applied to rheumatism of the muscles between 

 the ribs, which bears a strong resemblance to pleurisy. It may 

 be distinguished by the co-existence of rheumatism in other 

 parts, and by the comparative absence of fever, cough, rubbing 

 sounds, and effusion. Treat it like other forms of rheumatism. 



ASTHMA IN DOGS. 



A spasmodical affection of the circular muscular fibres of the 

 bronchial tubes, occurring in paroxysms with irregular intervals 

 and associated with corpulence and disordered digestion, dis- 

 tended or ruptured air-cells, mucous discharges from the air- 

 passages, and dilatation of the right side of the heart 



