414 
Fit. BLAZKKOVIC. 
blood corpuscles; sometimes a quantity of cream-like purulent 
and liquid mush. These coagulations increase by deposits in 
layers of the blood flowing by, and are easily detached from the 
lining of the heart. As soon as such a separation ensues and 
enters the blood current it causes the formation of metastatic 
deposits in the capillaries. 
Cancroid tumors of sarcomatous new formations are very sel¬ 
dom found on the heart. Occasionally in the dog they are found 
on the heart and muscles of the heart in progressive cachexia. 
(D) Changes in Consequence of Pre-existing Inflammation — 
Pericarditis. —Inflammation of the pericardium is either spread 
over the whole pericardium, or attacks only some parts of it. At 
the first appearance of inflammation of the pericardium unmistak¬ 
able traces of vascular injection are apparent in forms of red 
dots, streaks and scattered spots. Capillary plexus are visible 
upon the surface of the pericardium whose gloss and transparency 
disappear in the same proportion as the injection and hypermic 
progr.sses, finally loses its gloss and transparency entirely and 
receives the appearance of dull, dim glass. The pericardium is 
now and then covered with ecchymosis of extravasated blood. 
In horses and cattle, seldom in dogs, exudation with cellular 
new formations occurs shortly after hyperamic. Where the 
densest and most intense injection was, tender white flakes appear, 
peripheric coagulations separate and are easily stripped from the 
surface of the injection. Still sometimes the intensity of the red¬ 
ness is not in proportion with the exudation ; and sometimes profuse 
exudation is found where redness and injection is hardly perceptible. 
In such case the exudation, rich in flbrine, came to the surface of 
both lobes of the heart as a deposit, forming a fine gauze like 
covering which represents a turbid, soft yellow-reddish mass. 
These exudations, developing after hyperamic, do not always 
remain in their primary form, but are subjected to modifications, 
in consequence of which diversity in the character of the exuda¬ 
tion is often found. Although, at the outset we must adopt a 
priori diversity in the exudation, be it through modifications, be 
it through primary processes, nevertheless, these will be met with 
in the following principle forms: 
(lobe continued .) 
