WHAT PROFESSOR BANO’S WORK TEACHES. 
173 
Dangers attending the Use of Ttiberculin .—After an expe¬ 
rience extending over 53,000 cases Professor Bang is of the opinion 
that tuberculin is not injurious to healthy animals and that it 
cannot injure tuberculous animals, excepting by causing the 
disease to advance more rapidly and that “ such an acute develop¬ 
ment of tuberculosis as a result of tuberculin injection is to be 
feared only exceptionally and then in case of advanced tuber¬ 
culosis.” 
His final conclusion is “ that we have now found that in 
tuberculin we possess if not an absolutely infallible, still an ex¬ 
cellent means for recognizing tuberculosis, and that its applica¬ 
tion is not connected with any particular danger,” and it is also 
stated that “ tuberculin has been employed upon a large scale 
for years and still the demand from farmers constantly in¬ 
creases.” 
The Use of Infected Cattle ,—In Denmark it is evident that 
if all tuberculous cattle were at once destroyed^ without compen¬ 
sation to their owners the result would be widespread financial 
distress and ruin and it is out of the question for the Govern¬ 
ment to attempt to pay for all of the tuberculous cattle, because 
the amount that would be required for this purpose is beyond its 
resources. Therefore another method has, perforce, been adopted, 
which consists in the retention of the animals that have reacted 
to the tuberculin test and their continued use for breeding, for 
milk production and for the shambles. It has been found that 
under certain precautions all of these can be done safely and the 
saving is so great that a more radical method would under the 
circumstances be unjustifiable ; but it must be observed that the 
tuberculous cattle are kept alive only in perfect isolation from 
healthy cattle. They are cared for separately and when possible 
by separate attendants. They are kept in separate buildings or 
in distinct and completely separate sections of a common barn. 
Their calves are removed the day after they are born and are 
brought up on milk that has been heated to a point that will in¬ 
sure the destruction of the tnbercle bacillus. Their milk is used 
for the manufacture of butter (principally for export to England), 
