SS4 
EDITORIAL. 
The drinking now and then of mixed milk, even bacilliferous, 
has also a limited danger, but which yet must not be neglected. 
6. The general prophylaxy of the transmission of tubercu¬ 
losis by milk is a part of the prophylaxy of bovine tuberculosis. 
The exclusion from a milk production of all tuberculous animals 
is difficult to realize sufficiently rapidly on account of the diffu¬ 
sion of bovine tuberculosis. To' this point of view and for the 
present, one must be satisfied in obtaining from the Governments 
that the official collectivities should be provided only with milk 
furnished by non-tuberculous and healthy animals. 
7. The difficulties of application and specially of the realiza¬ 
tion of a method of general prophylaxy oblige the prescription of 
rules for individual prophylaxy. The heating of milk at 60 de¬ 
grees for twenty minutes or its boiling for several minutes are 
sure means to destroy the tuberculous bacilli and insure the in- 
nocuity of the milk. Pasteurization offers guarantee if carried 
out under official control; as it is for the needs of the trade it 
gives no certainty as far as sterilization of the tuberculous 
bacillus is concerned. 
* 
* * 
Tuberculosis and Milk. —Prof. J. T. Pleymans. The milk 
of cows can be contaminated by human tuberculous bacilli at 
the milking time or when submitted to manipulations by persons 
having open tuberculosis; unless previously sterilized, it can evi¬ 
dently infect man. 
Milch cows, suffering only with closed tuberculosis, give milk 
free from bacilli; those affected with mammary tuberculosis se¬ 
crete milk which contains almost always bacilli; those whose 
udder is free from lesions but have an open tuberculosis in an¬ 
other organ, such as the lungs, may contaminate their milk and 
also that of healthy milch cows, either directly or indirectly by 
their bacilliferous fcecal dejects. In a barn of milch cows, it is 
sufficient that one or several animals throw out bacilli to expose 
the entire milk of that barn to become bacilliferous. This milk 
