r 
42 7 
THE VETERINARIAN, JUNE 2, 1879. 
Ne quid falsi dicere audeat, ne quid veri non audeat.—ClClEO. 
PLEURO-PNEUMONIA IN AMERICAN CATTLE. 
We had, until recently, held the belief that the morbid 
anatomy of pleuro-pneumonia of the ox was so perfectly well 
understood by veterinary pathologists, that no difference of 
opinion was likely to arise when the diseased organs were 
exposed to view. Sometimes the symptoms of pleuro-pneu¬ 
monia in the living animal may be obscure, and equally 
careful, and skilled examiners may not agree in their conclu¬ 
sions respecting the exact indications; but the unaided 
vision suffices to enable the pathologist to determine on an 
inspection of the lungs, whether the a characteristic mar¬ 
bled condition of pleuro-pneumonia ” is or is not present. 
When we were informed that the inspector of foreign 
animals at Liverpool, had detected pleuro-pneumonia in some 
cattle from j the United States, we accepted the report as a 
matter of course, not suspecting that any question was likely 
to arise as to the fact of the existence of the disease ; and 
when portions of the lungs were sent to the Veterinary Col¬ 
lege for our inspection, we recognised the peculiar characters 
of the disorder with which we have been familiar from the 
date of its introduction into this country. Our long expe¬ 
rience in regard to the disease here and on the Continent 
would be worth little if it did not enable us to decide promptly 
in any case when the diseased organs are placed before us a 
Our colleagues, who also saw the specimens, experienced no 
hesitation in deciding that the morbid specimens were por¬ 
tions of lungs from animals which had been affected with 
pleuro-pneumonia. 
The College museum now contains specimens of the dis¬ 
eased lungs, which have been retained, not because they pre¬ 
sent any remarkable feature beyond those with which we 
are all well acquainted, but simply for the reason that they 
