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ALBERT BABB. 
balls;” in England “grapes,” or “the pearly disease,” which 
is the equivalent of the German “ perlsucht” and in Scotland 
“ crewels,” or “angleberries.” Likewise lupus, which is the 
Latin for “ wolf,” so named from its consuming nature and 
its rapacity, is now known to be tuberculosis of the skin, or 
tuberculosis verrucosa cutis. The generic term tuberculosis 
is derived from the Latin “tuber” a “ bump,” or “promi¬ 
nence,” as such deposits usually are denser than the surround¬ 
ing tissues. 
Let us now turn our attention to the causes of the disease 
in each particular animal, or to the manner in which the con- 
tagium is communicated. On this subject our standard vet¬ 
erinary writers are lamentably culpable. As high an author¬ 
ity as Dr. Williams, in his “ Principles and Practice of Veter¬ 
inary Medicine,” says: “We cannot, however, look upon 
tubercular diseases, as they occur in horned cattle, as belong¬ 
ing to the same category as the phthisis pulmonalis of man ; 
but,” he adds, “ similar conditions, both extrinsic and intrinsic,” 
cause a similar inflammatory process. This is certainly op¬ 
posed to all the rules of sound logic to admit the same cause, 
the same result, and then to deny the mutual relationship. 
Furthermore, he states that tubercle results from certain 
changes in inflammatory processes, for which special changes 
he assigns no cause but predisposition. All in all, he seems, 
instead of elucidating the subject, laboriously to envelop it 
in a thick mist of metaphysical arguments and periphrastic 
expressions tending only to make it appear more recondite 
and mysterious. The plain fact in the case is this : that 
wherever the bacilli lodge there is tuberculosis, and it is the 
cause of the inflammation—not its sequela. 
And certainly the works of the celebrated Dr. Fleming 
on the subject are no better. He sums up the matter as fol¬ 
lows : “ There are two causes which appear to be most potent 
in its production ; these are prolonged lactation and a cold 
and damp atmosphere.” “A cold atmosphere, and especially 
if it be also damp, is almost certain to induce the malady in 
cattle brought from a warm or mild climate.” He then re¬ 
lates that a herd of South Devon cattle were removed from 
