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A. LI A UT ART). 
senting itself in the forms of rods or bagnette, morphologically 
like those of anthrax. In these he saw the cause of the lesions 
which are always found, and which can be discovered and made 
evident by various manipulations, and they are of such value that 
they become the only means by which the true type of tuberculo¬ 
sis can be determined. 
Whether the parasite of this disease, like that of anthrax, can 
be found under two forms, that of true bacillus, as made out by 
Koch, and that of spores as by Toussaint, are facts which will 
serve to settle the question of priority of title in the claim to the 
credit of the original discovery. However this may be, it is 
to-day admitted, and to all appearances, until proof is brought 
to the contrary, with justice, that Dr. Koch of Beilin was the 
first one to prove, not only its existence, but its presence in the 
various tissues and secretions of the body, where tuberculosis de¬ 
posits are found. We all know that lesions are often discovered 
at post mortem examinations, which in their general appearance 
assume many of the characters presented by tuberculous deposits, 
but have only an external resemblance, and are not the true, but 
have, as they have been determined, the ‘‘ pseudo ” tubercles. 
For example, the different varieties of helminthes which in 
sheep, cattle, horses and other domestic animals produce the pe¬ 
culiar disease known as bronchitis vermicnlaris, also produce in 
the lungs, minute tumors, tuberculous in appearance, of pale yel¬ 
low color, slightly greenish, and of various sizes, in which micro¬ 
scopical strongyli, either isolated or rolled together in numbers, 
are found. These are really pseudo tubercles. In glanders, and 
in the pathological changes accompanying an embolism of the 
pulmonary artery, the tumors found of tuberculous appearance 
are all of the pseudo variety. Their true nature is proved by the 
absence of the bacillus of Koch. 
True tuberculosis is then a parasitic disease, and we owe to 
the establishment of this fact, notwithstanding its insidious form, 
and its slow and latent progress, that its diagnosis can be posi¬ 
tively established, simply by the presence of this little parasite, 
it now matters no more that the symptoms may not yet be well 
marked. There is no longer any possibility of a failure in the 
