Chapter IV: A Comparison between the Respiratory Lesions of Influenza

and those Initiated by the Inhalation of Poisonous Gases
with Special Reference to:— 40

(A) The Inflammatory Response versus the Systemic
Capacity to Compensate 40

(B) The Primary Injury 41

(C) The Tendency to Organization of Bronchiolar and
Alveolar Exudates with Bronchiolitis and
Bronchiolectasis as Sequelæ 42

(D) The Importance of the Trachea and its Ramifications
as a Protective Mechanism against Infection of the
Pulmonary Parenchyma 42

V. Peculiarities of the Histology of Influenzal Pneumonia 44

(A) The Extent of the Initial Pulmonary Lesion 44

(B) The Hemorrhagic Exudate—The Relation of Red to Grey
Hepatization 44

(C) The Aplastic Exudate 45

(D) The Hyaline Necrosis of the Pulmonary Tissue 46

(E) The Organization Process 46

VI. Infection as a Possible Etiological Factor for Malignant
New Growths 48

VII. The Bacteriology of Influenzal Pneumonia 49

(A) Organisms Associated with Influenzal Pneumonia 49

(B) The Relation of the Type of Organism to Pleural
Involvement 50

(C) The Relation of Different Organisms to the Type of
Pneumonia 50

(D) Summary and Discussion 54

VIII. Conclusions 55

IX. Bibliography 56

X. Illustrations 63

FIG. II. AUTOPSY NO. 98. DRAWING OF A SECTION THROUGH A TRACHEA
SHOWING NECROTIZING HEMORRHAGIC INFLAMMATORY PROCESS OF THE MUCOSA.
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