CHAPTER XVII 

 DISEASES OF THE RESPIRATORY ORGANS 



Disease 

 Bronchitis ... 



Pneumonia 



Strangles ... 

 Purpura hemorrhagica 



Influenza ... 



Glanders ... 

 Distemper 



Actinomycosis 

 Phthisis 



Micro- 



Cause. 



Pneumococcus, streptococcus, 

 coccus catarrhalis. 



Pneumococcus, streptococcus, staphylo- 

 coccus, B. coli, cocco bacillus. 



Streptococcus and others. 



Staphylococcus, streptococcus, diplococci, 

 and others. 



Primary : ultra- visible. Secondary strep- 

 tococcus, staphylococcus. 



B. mallei. 



Primary: ultra- visible or Bronchosep- 

 ticus. Secondary streptococci, staphy- 

 lococcus. 



Streptothrix actinomyces. 



B. tuberculosis. Secondary infection 

 may include — Streptococci, staphylo- 

 cocci, pneumococcus, Micrococcus 

 catarrhalis, M. tetragenus, B. coli. 



Bronchitis. 



It may be taken for granted, so commonly is the fact seen 

 in practice, that bacterial invasion of the respiratory tract, 

 from the anterior nares to the pulmonary vesicles, is a 

 mixed one ; indeed, the respiratory mucosas continually 

 harbour pathogenic bacteria whose disease - producing 

 qualities only become manifest through some disturbance 

 of Nature's protective and bacteriotropic forces. No sooner 

 does a specific organism gain a footing, and disease sets in, 

 than other bacteria have placed before them increased 

 opportunities for their development, which opportunities 

 they are not slow to embrace. All atmospheres are charged 



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