452 
FR. BLAZEKOVIC. 
pericardium alone, but the same effusions are present in the other 
parts of the body (as an indication of local or general dropsy). 
The serous exudation is transparent, thin liquid, light yellow— 
yellow-green, and not viscid. Fibrinous flakes float therein, 
which, however, accumulate very rapidly and form a covering 
over the pericardium. The serous effusion is apt to yield to pur¬ 
ulent decomposition; still it can be easily resolved if no dense 
sward exudation cover the pericardium. According to the in¬ 
crease of the quantity, the exudation tills the pericardium par¬ 
tially, or wholly, and thereby determines the more or less alarm¬ 
ing symptoms of disease during life. The pericardium expands 
according to the increasing quantity. The heart, as a specific 
heavier body, takes a deeper position, hence, with every pulse 
beat, a wave-like motion must arise in the liquid. 
IV.— Hemorrhagic Exudation. 
This consists of a quantity of serum, albumen, slightly coagu¬ 
lated fibrine, and an admixture of pigment. It is sometimes 
clear, brownish-red, or brownish-black, and of a primary or sec¬ 
ondary nature. Its quantity varies, and with the exception of 
the change in color, it seldom succumbs to metamorphosis. 
V.— Purulent Exudation. 
Purulent exudation is a secondary form, and can develop 
from any exudation which will admit of a change into pus cells. 
Generally it is an additional consequence of the development of 
fibrous exudation. The color is greyish-green, or greenish-yel¬ 
low; the consistency cream-like, often thin liquid. The mass is 
always lodged between the organized fibrous tissue, so that pus, 
fibrous exudates, tissue and serum can be met with at the same 
time. Purulent exudation in the pericardium will only then be¬ 
come resorbed when the quantity is not too great; still the puru¬ 
lent liquid only resorbs, the pus cells become thickened (because 
they cannot pass through the walls) which thus absolved are less 
injurious. Under unfavorable circumstances the purulent exuda¬ 
tion becomes sanious. 
VI.— Sanious Exudation. 
This is a thin liquid, grey-green, or greyish-brown mass, 
