DISEASED LUNGS OF A HORSE. 
273 
gestion of tlie blood-vessels, either active or passive; and yet 
it was evident enough that these organs were extensively 
involved, and over which no treatment, whether medical or 
otherwise, could have the least control. Such, I conceive, 
were the feelings of these two gentlemen, both being practi¬ 
tioners of large experience, and I feel confident that such 
would have been my position under similar circumstances. 
The importance, then, of recording these cases seems obvious 
enough. In some degree they may assist in diagnosing 
similar lesions, and they may also serve as guides in arriving 
at conclusions in disputed cases of soundness at the time of 
the sale of a horse. I will now give a brief description of 
the morbid parts above alluded to. 
The lungs were much enlarged, and of a lighter colour 
than natural; their outer surfaces were slightly uneven, 
in consequence of numerous nodule-like tumours in their 
structure, immediately beneath their serous coverings, but 
the latter were in no way structurally involved with the 
former. These tumours varied in size from that of a pea to 
a small walnut, and were found, on making a section of the 
lungs, to be disseminated throughout the entire substance of 
these organs, and were more or less connected together by 
light-coloured striae, which passed from one to the other 
between the lobuli. These small tumours were moderately 
firm and of a lightish gray colour, except in the centre of 
some of the larger ones, where it was of a yellowish-white 
aspect. The striae between the lobules were of a pearly 
white colour, and, if anything, a little firmer in structure 
than the tumours. 
The bronchial lymphatic glands, which had not been re¬ 
moved from the root of the lungs, were larger than natural, 
and their structure materially altered by the deposition of 
abnormal matter in their interior, which was similar in 
appearance to that deposited in the substance of the lungs, 
but it looked as though it was of an older date. 
The spleen was a most remarkable specimen of disease. 
It was many times larger than it would have been in a healthy 
state, weighing not less than twenty-five pounds, and was of 
corresponding dimensions. Its bulk was not due to its being 
surcharged with blood, as is very often the case, but, like 
the lungs and glands above alluded to, to abnormal growths 
within its structure; these growths were not, however, regularly 
developed throughout the organ, but in isolated spots forming 
a series of tumours varying very much in size ; some were as 
large as a good-sized apple, others not larger than a small 
walnut, and many were of an intermediate size. Of these 
