370 
CLIPPINGS FROM MEDICAL PAPERS. 
never be eradicated, u the killing of all chronic cases, no math 
how apparently healthy they might be.” I arrived at this co 
elusion from careful observation of the operations of the disea: 
not only in this country but in England, where I had conside 
able experience in examining its development and spread. Sint 
that time I have carefully watched the progress of the disease j 
this country, and have communicated with some of the most em 
nent scientists and experts in England and the United States, wl; 
fully agree that the greatest danger to bo apprehended is froi 
these chronic or apparently recovered cases. Prof. G. T. Browi 
Royal Veterinary College, London, professional adviser to tb 
British Government on contagious diseases of animals, in answt 
to an inquiry I addressed to him, says, under date of Octobc 
21st, 1884 : 
u It is quite impossible to tell at what period recovered an 
mals cease to be capable of communicating pleuro-pneumonia, bu 
we have ample evidence to prove that they are the cause of nun 
erous outbreaks of that disease in various parts of the country 
in f a ct, you may take it to be a maiter of absolute certainty tha 
it is quite impossible to stamp out pleuro-pneumonia in any com 
try where the so-called recovered animals are allowed to remai 
alive.” In even stronger language, if possible, is this opinion ri 
iterated with regard to chronic cases by Prof. Thomas Wallop 
Principal of the Eoyal Veterinary College of Edinburgh; Pro! 
William Williams, F.R.C.V.S., Principal of the new Veteriij 
a:'} college, Edinburgh j Prof. James McCali, Principal of th 
Gh;: row Veterinary College; Dr. James F. Simpson, Vice-Prer 
ident R.C.V.S., England; Clement Stephenson, F.R.C.V.S. 
Chief Inspector for Northumberland, Eng.; Prof. D. McEacb 
ran, Chief Inspector of Stock for Canada, and Principal of tin 
Montreal Veterinary College; Prof. Liautard, Principal of tin 
American Veterinary College, New York; Prof. C. B. Michener 
of the same college ; Prof. Kush S. Huidekoper, Principal of tin 
Veterinary Department of the University of Pennsylvania; Prof 
W. L. Zuill, of the same institution; Dr. Robert Ward, State 
Veterinarian for Maryland; and Dr. Miller, United States Yet 
erinary Inspector, Camden, New Jersey, 
