PHYSIOLOGICAL PATHOLOGY. 
273 
on the bacillus, it may easily be observed that it is the effect of 
the complete, entire body of light to which it is referable, and 
that it is also the more marked in proportion to the intensity of 
this light. 4th. These results are analogous to those which the 
author has already observed with artificial light .—Academie des 
Sciences. 
UPON THE PASSAGE OF PATHOGENIC MICROBS FROM THE 
MOTHER TO THE FCETUS IN THE MILK. 
By M. Kotjbassof. 
Two series of experiments have been made. In the first the 
author has clearly observed the passage of the microbe of an¬ 
thrax, hog cholera and tuberculosis in the milk, and the absence 
of any effect produced by the milk thus affected when given to 
the animals fed upon it. The conclusion he forms is that milk 
containing pathogenic microbes is not contagious ; a condition 
which must thus be due to the integrity of the mucous mem¬ 
brane of their stomach and intestines. 
In the second series the author brings to notice the evidences 
that there exists a direct communication between the blood vessels 
of the mother and those of the foetus. 
In conclusion, Mr. K. says: 
1st. The bacili of anthrax, hog cholera and tuberculosis, in¬ 
oculated to a female recently delivered, pass in the milky secre¬ 
tion. 
2d. When once in the milk, the bacilli remain in it until the 
end of lactation in the teats of the female. 
3d. Foetuses fed on milk containing bacilli of anthrax, hog 
cholera or tuberculosis, remain exempt from these diseases and 
live, even when their mothers die from it. 
4th. The passage of the microbes of the mother to the foetus 
depends probably on the existence of direct communication in 
the placenta between the blood vessels of the mother and those 
of the foetus .—Academie des Sciences. 
