SPORADIC PNEUMONIA AND CONTAGIOUS PLEURO-PNEUMONIA. 529 
and disappearance of the dulness. This termination is the most 
frequent, and generally happens in six out of ten cases. 
Asphyxia is almost the only fatal termination of the pneumonia 
of cattle ; it kills from a third to a quarter of the patients. It is 
characterized by the dark red coloration of the mucous membrane, 
by a small, thready almost imperceptible pulse, contrasting much 
with the movements of the heart, which are strong and accelerated. 
Respiration is labored, 70 to the minute. The animal keeps 
standing up, with legs wide apart, head low and hanging down, 
the features are contracted, respiration becomes stertorous, much 
of the breathing is done by the month, the dulness of the lung 
extends to the whole surface of the lobe, and the animal soon dies. 
Termination by gangrene and suppuration are also sometimes 
met. Passage to the chronic condition we have not observed. 
DIFFERENTIAL SVMPTOMS. 
The symptomatic study of both diseases shows that while they 
have characters common to both they also possess some peculiar 
to each. 
These are few, and perhaps not very positive when they are 
considered separately, but they may by a close and attentive ex¬ 
amination give positive data by which a positive diagnosis can be 
made. 
The outset of both diseases is announced by a general fever, 
with its common symptoms, but a well marked difference exists 
in the mode of elevation of the temperature. It is conceded by 
all that in pleuro-pneumonia, while all conditions of health may 
yet remain, the thermometer will still register an elevation of 38°, 
40°, or even 41°. In sporadic pneumonia, on the contrary, the 
rise is progressive, reaching its highest degree only after sev¬ 
eral days. It is however in this first stage that this can be of any 
advantage in the differential diagnosis. 
In pleuro-pneumonia, in the beginning, digestive troubles are 
almost always observed. Frequent indigestion, tympanitis, gen¬ 
eral uneasiness of the patient, intermittent slight colicky pains, 
constipation followed by diarrhoea. These symptoms ordinarily 
coincide with the beginning of the pleuretic effusions. 
