14.2 DR. BEALE, ON THE CATTLE PLAGUE. 
an increased pouring out of nutrient matter and a growth of 
the germinal matter (usually termed nuclei) of the vessels 
and tissues. Dr. Beale thinks that whatever causes the local 
congestion is the cause of rinderpest. 
1. Changes in the vessels and in the blood—The small 
vessels, arteries, and veins, of congested spots are distended 
with blood-corpuscles ; the arteries are at first relaxed, but 
become subsequently more or less contracted, so that their 
outline is more or less uneven, the diameter varying very 
much in the smallest distance; the coats are granular; often- 
times, indeed, there is considerable atrophy. These changes 
Fre. 1.—Surface of mucous membrane of fourth stomach, corresponding to a 
thin depressed circular spot like an ulcer; superficial capillary vessels, 
varying very much in calibre, filled with granular matter and minute par- 
ticles of germinal matter. The orifices of several gastric glands are seen, 
and the deeper vessels also obstructed are on a lower plane. X 350. 
are seen in the annexed illustration (Fig. 1), showing the 
capillaries encircling the mucous glands from the mucous 
membrane of the fourth stomach. 
In addition to these changes, there is another alteration of 
most striking character present in every case—viz., a large 
increase in the size of the masses of germinal matter in the 
walls of the vessels. This is well seen in Fig. 2, which repre- 
sents a capillary from the connective tissue of the alimentary 
mucous membrane. 
The vessels are sometimes distended with red corpuscles 
(more or less altered), sometimes filled with a colourless or 
slightly yellowish fluid; the white corpuscles are always 
increased in the small veins and capillaries; and in additio 
