870 



DISEASES AND THEIR TREATMENT. 



Fig. 765. — Trachia and bronchial tubes. 



H, Trachia; I, Ramifications of bronchial 

 tubes I L, Chobaic artery. 



the parenchyma of the lungs; 

 if we had pleuro-pneumonia, 

 we would have an inflamma- 

 tion of the pleura, or mem- 

 brane, and the parenchyma 

 or tissues of the lungs. 



Congestion of the lungs con- 

 sists in an increased determi- 

 nation of blood to the capilla- 

 ries of the air-cells. When 

 one or the other (right or left) 

 lobe of the lungs is so en- 

 gorged with blood forced into 

 them, that they are unable 

 to either receive or discharge 

 blood in proper quantities, 

 thereby interfering materially 

 with the process of respiration ; 

 and consequently, if allowed 

 to go too far, it will cause di- 

 rect suffocation and death. It 

 may exist as an independent 

 disease, or accompany other 

 affections of the chest. The 

 distinguishing symptoms of 

 each, with treatment, Avill be 

 given farther on. In order to 

 eimplify the treatment, I refer 

 next to the nature and effect of 

 inflammation. 



It is first an increased ac- 

 tion of the blood-vessels. The 

 consequence is an increased 

 amount of blood to the part. 

 The next change to take place 

 is a collapsed condition of the 

 walls of the vessels. Now 

 there follows an enlargement 

 of the blood-vessels ; then the 



