Pathology Delafield and Prudden. 



Plate VII. 



Diffuse and Focal (Chronic) Pulmonary Tuberculosis 

 " Chronic Phthisis." 



In the upper third of the lung there is tuberculous broncho-pneu- 

 monia with commencing ulceration of small bronchi : nearly complete 

 consolidation from the extension and coalescence of small tuberculous 

 foci and diffuse formation of fibrous tissue. 



In the lower third of the lung are irregular, dense, sharply outlined 

 tuberculous foci (chronic miliary tubercles). 



In the middle third there is tuberculous pneumonia of the exudative 

 type, the incompletely consolidated areas having become, in part, caseous. 



The less involved portions of the lung in this, as in the other in- 

 jected specimens, are the darker. 



