BOVINE TUBERCULOSIS. 
269 
Jour, of Comp. Path.) of animals exposed will contract the 
disease, and about 50 per cent, of these will die. Further, 
contagious pleuro-pneumonia is found only in the bovine. 
On the other hand, bovine tuberculosis is an extremely 
slow and chronic disease ; it is not a fatal disease ; it is not a 
highly contagious disease, for a large proportion of cases are 
entirely harmless ; and further, it is not confined to the bovine, 
but is found in all domestic animals. 
In a Report of the Department Committee on Tubercu¬ 
losis in Great Britain, appointed April, 1888, it is stated that 
the order in which animals are liable to be affected is man, 
milk cows, rodents, pigs, goats, sheep, horses and carnivora. 
(Annual of Medical Sciences, 1890). Further, the bacillus of 
tuberculosis has been found in bedbugs (Bulletin of Vermont 
Agi. Exp. Station, 1893), as well as earth worms, on paper 
money, and on the dust of public thoroughfares, etc. 
When the last case of contagious pleuro-pneumonia is de¬ 
stroyed the danger ceases to exist. With bovine tuberculosis 
it is entirely different, and I believe certain of the members 
of the Massachusetts Cattle Commissioners do not dispute it. 
We have Dr. Lyman’s opinion in the Report of the Board for 
the year 1893, where he says tuberculosis cannot be stamped 
out, it must be weeded out, or words to that effect. (Cattle 
'Com. Report, January, 1894.) 
Prof. Stockbridge, at that time Chairman of the Board, 
gave his opinion at a meeting of the Massachusetts Veterin¬ 
ary Association in May, 1894, when he said : 
I But we are not so green about tuberculin as we might 
| be, and really I can say that a great deal of good in the way 
P f diminishing this disease may be done by the use of tuber¬ 
culin, and, therefore, I think the Commission should recom¬ 
mend to owners to use tuberculin, and we think that really a 
7ery great advance may be made by its use; but if you be 
ieveyouare going to stamp out tuberculosis by the use of 
.uberculin, as we stamp out contagious pleuro-pneumonia, I 
5a y, no > we wiU never do that. We can diminish it, but can 
lever stamp it out. But when our medical profession treat it 
is a contagious disease, we shall make more advance with the 
lovine.” 
