CHAPTER LIL 



SPOEADIC DIS'EASES— continued. 



LOCAL DISEAS'ES— continued. 



(/.) DISEASES OF THE EESPIEATOEY OEGANS— cwi^mwed 



INFLAMMATION OF THE LUNGS— LQBAE (SPOEADIC) 

 PNEUMONIA. 



Synonyms and Varieties. — Peripneumonia ; peFipneumonia 

 vera (as opposed to peripneumonia notha, or capillary bronchitis) ; 

 febris pneumonica ; acute pneumonia ; chronic pneumonia ; lobar 

 pneumonia ; interlobular pneumonia (an affection of the inter- 

 lobular tissue) ; primary pneumonia, secondary pneumonia 

 (signifying differences in origin) ; specific or glanderous pneu- 

 monia. I retain the terms sporadic and lobar, as being indica- 

 tive of the origin as well as of the seat of the disease. 



PATHOLOGY. 



Congestion or engorgement of the lungs has been already 

 described as a result of arrested pulmonary circulation arising 

 from over-exertion, debility of the heart's action, embolism, or 

 to any other circumstance preventing the due arterialization of 

 the venous blood, and causing hsemorrhage from or stasis in the 

 terminal branches of the pulmonary artery. 



Inflammation of the lungs is a disease in which all the 

 textures of the pulmonary substances are niore or less involved ; 

 and this distinction may be made between congestive and in- 

 flammatory pneumonia, that, in the first the lesion lies primarily 

 in the pulmonary vessels, and, in the second, in tissues supplied 

 by the branches of the nutrient vessels of the lungs, namely, 

 the bronchial arteries, the pulmonary branches becoming sub- 

 sequently involved, and having no inconsiderable share in 



