78 
A. W. CLEMENT. 
person in every seven born into the world dies of this disease, 
and probably one-third of the autopsies made upon persons 
dying from different diseases, including tuberculosis, will pre¬ 
sent lesions of this disease, either active or healed. It is a 
disease confined to no particular class of persons and bounded 
by no geographical limits. It is common to a greater number 
of species of animals than is any other disease known to medi¬ 
cine. In fact, it is quite probable that no species of animal 
living is absolutely immune or proof against its attack. 
Certain conditions of life, such as domestication in the 
lower animals, and the crowding together, and lack of sanitary 
precautions in the human species, undoubtedly favor its de¬ 
velopment. How often, however, do we see those comfort¬ 
ably housed and surrounded by all that wealth can procure, 
fall victims to its attack. How often, in our own profession, 
do we see registered cows, so highly valued by their owners, 
surrounded by all the comforts possible, kept in stables where 
the sanitary arrangements are well-nigh perfect, or allowed 
in suitable weather, to graze upon the finest pastures—how 
often, I say, do we see such animals gradually lose in flesh 
and in the flow of milk, until they finally die, or become so 
valueless as to pass from the rich man’s stable to the shed of 
one who is, to a great extent, dependent upon his cow to give 
him milk upon which to rear his family. In many other cases 
a cow with like history goes to form one of a number of simi¬ 
lar animals constituting the dairy which supplies what pur¬ 
ports to be pure milk to its customers. Then, too often, after 
she has been milked until, from the steady advance of the dis¬ 
ease she ceases to produce enough to pay her keeping, the 
glue factory is cheated, at the expense of the citizens who buy 
her in small pieces at the stalls in our market places. Of 
course this is not first class meat, but it forms a very consid¬ 
erable proportion of the meat from which sausages are made. 
We know, moreover, that tuberculosis does not always 
produce such extreme emaciation in cattle as in the cases 
above cited. How often do we see cattle slaughtered, the 
lungs and glands of which are filled with “ boils,” to use the 
expression common among the butchers, but whose flesh is 
