478; 



DISEASES AND THEIR TREATMENT. 



Bronchitis is inflammation of the lining membrane of the tubes 



of the lungs arid lung cells, which 

 is considered in another part of 

 this work ; but as it is frequently 

 connected with lung difficulties, I 

 refer to it again in this connec- 

 tion. 



Pleurisy is inflammation of the 

 pleura (or serous membrane which 

 covers the lungs and thoracic cav- 

 ity), before referred to. 



Pneumonia is an inflammation of 

 the lung tissues, or parenchyma 

 of the lungs. If we had bronchial 

 pneumonia, we would have an in- 

 flammation of the lining mem- 

 brane of the tubes and the paren- 

 chyma of the lungs ; if we had 

 pleuro-pneumonia, we would have 

 an inflammation of the pleura, or 

 membrane, and, the parenchyma, 

 or tissues of the lungs. 



Congestion of the lungs consists 

 in an increased determination of 

 blood to the capillaries of the air- 

 cells. When one or the other 

 (right or left) lobe of the lungs is 

 so engorged with blood forced into 

 them that they are unable either 

 to receive or discharge blood in 

 proper quantities, thereby inter- 

 fering materially with the process 

 of respiration, it will, consequent- 

 ly if allowed to go too far, cause 

 direct suffocation and death. It 

 may exist as an independent dis- 

 ease, or accompany other affec- 

 tions of the chest. The distin- 

 guishing symptoms of each, with 

 treatment, will be given farther 

 on. In order, to simplify the treat' 

 ment, I refer next to the nature and effect of inflammation. 



Fig. 799 — Trachia and Bronchial Tubes. . 



H, trachia ; I, ramifications of bronchial 

 tubes ; L, chobalc artery. 



