REPORT OF CASE. 
529 
persons, was due to the dispersion of infectious germs from the 
sputa in the air of the room. To this effect he made eleven ex¬ 
periments upon dogs—these animals are known to be resistant to 
tuberculos infection—several being confined at a time in a space of 
twelve cubic centimetres dimensions, into which by a spray-disperser 
was distributed in minute particles an emulsion composed of from 
fifteen to thirty grammes of the sputa of persons by whom caverns 
were undoubtedly present, the same being mixed with 300-500 
CCm. aqua. The animals were subjected to the inhalation two 
times daily for an hour each time. In some cases they remained 
in the room, in others were allowed to roam about free during 
the intervals. It is self-evident that a quantitative introduction 
of the tuberculotic elements could not take place in this way, yet, 
with the exception of one dog, all the others presented on abduc¬ 
tion the most manifest signs of miliary tuberculosis of the lungs, 
in most of the kidneys also, and in some the same were found in 
the liver and spleen. 
The results of these experiments confirmed the suspicion that 
the aspiration of particles of tuberculous sputa was sufficient to 
produce tuberculosis by perfectly healthy dogs, which gives rise 
to the suspicion that the same way of infection takes place from 
man to man. Dr. Reich observes this can be obviated by having- 
such patients isolated in large, airy, and well ventilated rooms, 
and that the probability of infection increases with the accumula¬ 
tion of such patients in the same rooms. Cattle breeders and milk 
men should not be slow in learning a lesson from the above facts. 
F. S. B. 
REPORT O F C ASE. 
DYSTOCIA IN A COW. 
By J. C. Myers. Jr., D.V.S. 
January 23d I was requested by Mr. Rakers, a dairyman re¬ 
siding at Barrsville, to render obstetrical assistance to a cow dis¬ 
tressed with difficult parturition during the preceding sixteen 
