EDITORIAL. 
3S5 
mixed with other healthy milks in central dairies may also be¬ 
come a source of infection for men and bovines. 
Indeed, the milk containing living bovine bacilli infects most 
of the domestic animals, among which, as the principal cause, is 
found in porcine tuberculosis; it is also the most frequent cause 
of human tuberculosis with bovine type. 
It is not yet proved that, in ordinary conditions of life the 
tuberculous bacillus of bovine type transforms itself in the hu¬ 
man body, in bacilli of human type and vice versa. 
All milch cows affected with open tuberculosis, and specially 
those suffering with mammary tuberculosis, must absolutely be 
excluded from milk production; by prophylaxy, general tubercu- 
lination and eventually by vaccination, one must attempt to in¬ 
crease the number of barns of milch cows, totally free from 
tuberculosis. 
In the meanwhile, sterilization by heat imposes itself for any 
milk, unless there is perfect certainty of the absence of human 
or bovine tuberculous bacilli. 
* 
* * 
Modes of Entrance and Diffusion of Tuberculous 
Bacillus in the Organism. —Report of Prof. M. Friedrich 
Weleminsky, from Prague. 
Conclusions.—i. The first infection by tuberculous bacilli al¬ 
most always takes place during infancy, so much so that 90% 
of children ten years old react positively with Picquet’s test. 
2. As the common form of tuberculosis in infancy is that of 
the lymphatic glands, specially the cervicals, and as pulmonary 
tuberculosis is very rare in scholars, it is certain that the primary 
infection which can be traced with certainty, that of infancy, does 
not begin generally in the lungs, although children are exposed 
to the aerogenous infection as much as adults. 
3. It is then probable that the ordinary form of tuberculosis 
of adult, the pulmonary, is not either a primary infection, but 
very often a continuation of the infantile tuberculosis of the 
lymphatic glands. 
