108 DISEASES OF THE HOG. 
ute); the heart’s action is rapid, jerky, disturbed, 
and tumultuous, but takes strength; auscultation 
of the chest is not satisfactorily made in the pig; 
but in some cases where the animal will lie quiet a 
minute crepitation or a fine sharp crackling sound 
will be heard; this avant may be diffused or it ae 
no distinct sound will be heard. Congestion of the ° 
lungs occurring as a result or in connection with 
other diseases, although the symptoms are not to 
all appearances so severe, are generally more fatal 
than when the result of over exertion. 
Terminations: The great majority of cases which 
are severe and acute unless prompt treatment is 
had recourse to will terminate fatally. The condi- 
tion of the congested vessels rapidly causes death 
from asphyxia. Milder cases may terminate in in- 
fiammation of the lungs. 
Post Mortem Appearance: In pigs which die of 
this disease the lung tissue will be found greatly 
distended with dark colored fluid blood with ocea- 
sionally circumscribed effusion of blood from rup- 
ture of minute and capillary vessels. Thelungs are 
swollen and of a darker color than natural and 
_ their 'crepitant character is much diminished, al- 
though not altogether gone. Their normal elastic- 
_ ity and spongy texture is somewhat destroyed and 
although heavier than natural, still they will float 
on water. When the surface is cut there will be an 
‘. oozing of blood and if squeezed it will drip as if © 
from squeezing a sponge, and it is rendered frothy 
from the entanglement of air. The lining mem: 
