102 
A. J. MURRAY. 
theie weie small irregular areas of black discoloration surrounded 
b) fibious tissue, rendering the portion of lung affected impervi¬ 
ous.. *111080 appearances I attribute to hemorrhagic infection 
having taken place; the fluid part of the blood was absorbed, but 
the coloring matter of the blood remaining unabsorbed produced 
the black discoloration. There was always an area of fibrous 
tissue surrounding the black discoloration; this was developed to 
close up the cavity occasioned by the destruction of lung tissue. 
At these points there appeared to be a drawing together of the 
lung tissue towards the centre of what I may term the cicatrice. 
On making a section of the nodule it was found that the lung 
tissue had been mostly removed by absorption, but that stretching 
fiom one side of the cavity to the other were numerous bands or 
septa. These bands had undergone calcareous degeneration, as 
also had the walls of the cavity, which I found to contain two 
flukes (distoma hepaticum). The biggest of the two, when drawn 
out to its full size, was about two inches long. There was a small 
quantity of a dirty brownish-looking liquid in the cavity, no doubt 
mostly composed of the debris of the softened lung tissue. Ad- 
joining this cavity was a small one, containing a small quantity 
of the same kind of fluid; but the walls of this cavity were corn-. 
posed of fibious tissue; it was empty, and did not contain any 
parasites. 
In another lung examined shortly after the one above mem 
tioncd, a similar cavity was found, which also contained two 
flukes (distoma hepaticum). This case appeared to be more 
recent, as the bands stretching from the one side of the cavity to 
the other had only partially undergone calcareous degeneration, 
and weie pink and soft in some portions. The same remark 
applies to the walls of the cavity. This lung had likewise some 
small encysted portions of tissue undergoing cheesy degeneration. 
The cases in which I found the distoma hepaticum in the lung 
thiow light on the previous ones in which no parasites were found, 
as even in the lungs in which parasites were present I found 
morbid alterations in parts of the lungs in which there were no 
parasites, but which were no doubt occasioned by their wander- 
ings. In fiv § cases, though I found the morbid alterations pro- 
