CONTAGIOUS PLEURO-PNEUMONIA. 
11 
CONTAGIOUS PLEURO-PNEUMONIA. 
Thesis presented by W. Zuill, D.V.S., before the University of Pennsylvania, 
Medical Department. 
INTRODUCTION. 
The disease I am about to consider is known under the 
following names: 
/Synonyms .—Lung disease; pleura new disease ; new delight; 
“Yorkshire” pulmonary murrain; epizootic pleuro-pneumonia, 
etc; called by the Germans, lungenseuche and peri-pneumonia 
exudativa contagiosa; by the French, maladie de poitrine du gros 
betail and peripneumonie contagieuse. 
It is a disease peculiar to the ox tribe, and is said not to affect 
any other animal or man. 
Being much interested in the subject, and having in my veter¬ 
inary practice seen a number of cases, 1 have taken the oppor¬ 
tunity to study personally the pathology and pathological anatomy 
of this disease, and also tried to make an inquiry into the nature 
of the supposed poison ; from my experience I must fully agree 
with those who consider the disease of specific and malignant 
character, eminently contagious to animals of the same tribe. 
The microscopical examinations of the specimens I made in 
the pathological laboratory of the University of Pennsylvania, 
were thorough. 
For the convenience of the examiner, I have introduced into 
this essay appropriate illustrations; extracts from the excellent 
writings of Prof. William Williams, F.R.C.V.S., Edinburgh, in 
his Principles and Practice of Veterinary Medicine, and of 
Charles P. Lyman, F.R.C.V.S., in his third report to the Com¬ 
missioner of Agriculture at Washington. 
DEFINITION. 
A contagious febrile disease, peculiar to the animal before 
mentioned. 
It is supposed to have originated in Central Europe, and has 
been conveyed to all parts of the continent, to Great Britain, 
Africa, America, Australia, India and Hew Zealand. 
