COULON AND OLIVIER. 
K09 
004 
distinct from the parenchymatous structure at that point; they 
become more apparent in the congested portion, where their dark 
color, due to capillary hemorrhages, differ from the purplish 
color of pulmonary tissue. There, also, on section, serosity is 
seen escaping from their meshes. 
In the hepatized lower part, the coloring matter of the blood 
having been resorbed, the divisions appear under the form of 
whitish regular lines of an even thickness. Of the same density 
as the pulmonary tissue, they seem part of it, and are distinguish¬ 
able from it only by their white greyish color, so different from 
the light red of the lobules. Their division is not followed by 
running of serosity. 
The pulmonary lobules in the upper parts, recently diseased, 
have a general strong red or purplish hue, evenly spread from 
one lobule to the other. Closely examined, the hue is at times 
finely marked with pigmentary spo.ts, blackish, due to capillary 
hemorrhages. 
But here and there, upon the homogeneous color, appears a 
polyedrical brownish-black spot, resembling the section of a fresh 
clot of blood. It is a lobule where the congestion has been such 
that the hemorrhage has destroyed almost entirely the cellular 
network, which seems to disappear in the bloody clot. This 
special lesion, very likely, is due to the sectioned structure of the 
lungs, which renders the lobules independent of each other, 
especially in case of sanguinous irritation, and prevents the diffu¬ 
sion of the lesion. 
In the superior and middle regions are also found, disseminated 
in the mass of the lobe or on its surface, a certain number of 
purulent centres of various sizes, containing a thick, creamy, whit¬ 
ish-yellow liquid, analogous to that of warm abscesses, and hav¬ 
ing for wall a layer of little granulations, purplish in color, like 
that of the surrounding tissue. These abscesses are not found in 
the lower region. They have been emptied by resorption or by 
evacuation of their contents in the bronchial divisions. 
In the lower part the lobules are seen, evenly hepatized, 
smooth on section, with a granulous tear, due to the presence in 
their infundibula of very fine fibrinous concretions. On that 
