experimental Pathology. 
373 
Wargnnin made the histological examiiiation of the lung mat¬ 
ter of these lesions, in order to study their nature. 
He first reports a case shown to him by Rajewski, referring 
to the pulmonary substance of a cat, in which, to the naked eye, it 
seemed like that of miliary tuberculosis, and resembled pneu¬ 
monic nodules. 
The lesion observed in a dog had also the form of nodules, 
constituted by groups of nnliltered alveolae, having a little bron¬ 
chia in the centre. In most cases the cellular wall of this bronchia 
was thickened. No giant cells could be anywhere detected. With 
a 300-diameter magnifying power, these nodules appeared to be 
formed of young cells, fusiform in appearance, and these being 
destroyed, the walls of the lobular bronchia penetrated into their 
cavity and obliterated them. These masses of young cells con¬ 
tained no blood-vessels, and underwent fatty degeneration. The 
alveolae next to the obliterated bronchia were often atelectasiated 
• 
The alveolae showed the same masses of new cells, with destruc. 
tion of the walls, and the same fatty degeneration, but no caseous 
changes. The lesion seemed to start from the bronchial walls 
and to extend on one side to the bronchial cavity, and on the 
other to the alveolae. The author does not, then, consider these 
lesions to be tuberculous, but to be those of lobular-broncho¬ 
pneumonia. He had begun his researches before the discovery of 
the bacillus of Koch, and now asks if this micro-organism pos¬ 
sesses the etiological value attached to it, and if tuberculosis is 
truly a contagious and parasitic disease .—(Revue de Sciences 
Medicates .) 
UPON THE TUBERCULOSIS OF THE UDDER OF THE COW, AND 
TUBERCULOUS MILK. 
By B. Bang. 
Professor Bang, of the Veterinary School of Copenhagen, 
has examined twenty-seven tuberculous udders of cows. Tuber¬ 
culosis in the cow often affects that organ, and often begins 
there ; in all the cases the milk contained tuberculous bacilli, and 
frequently in great quantities. Inoculations made by him always 
gave positive results ; in some animals very rapidly. Feeding 
