OF VETERINARY MEDICINE. 72> 



Location. — 



1. Lobar — when a whole lobe is affected. 



2. Lobular — when it is limited to lobules. 

 Character — 



L Fibrinous or Croupous. 



2. Catarrhal — usually complicated with 



bronchitis — broncho-pneumonia. 



3. Caseous Pneumonia — tuberculosis. 



4. Interstitial Pneumonia — when the in- 



flammation is located in interstitial 

 tissue. 



We also have (1) Contagious and (2) Non-Contagious 

 (sporadic) pneumonia. Pleurisy is sometimes combined with 

 pneumonia and we get pleuro-pneumonia. The horse practically 

 always has the lobar pneumonia and it is always fibrinous. He 

 has both the contagious and the non-contagious and has the inter- 

 stitial as a complication in glanders. Occasionally he has the 

 catarrhal form as far as the complication of bronchitis with it is 

 concerned, constituting broncho-pneumonia) but the pneumonia 

 is fibrinous. 



The catarrhal form is seen most often in children; fibrinous 

 in horses and men. The catarrhal is usually the form seen in 

 dogs and cats. Caseous is seen in cattle, men and swine. 



Characteristics of cut surface of consoHdated lung: 



1. Fibrinous — glistening, rough, dry, i. e., 



comparatively. 



2. Catarrhal — smooth and moist. 



3. Caseous — opaque, cheesy, smooth and 



lustreless. 



4. Interstitial — this is more the inflamma- 



tion of the interlobular connective 

 tissue, and extends to the vesicles 

 only secondarily. This is the pneu- 

 monia which complicates gfenders, 

 seen also in coal miners. 

 Fibrinous pneumonia is usually lobar, while the catarrhal i-> 

 frequently lobular. Pneumonia may be single or double— right 

 or left lateral. It runs through four well defined stages. As- 



