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EXPERIMENTAL PATHOLOGY. 
ference between the microbes of animals and of man. The identity 
of the nature of the diseases cannot be denied. 
The fact that the septic vibrio belongs to the anerobic mi¬ 
crobes explains why it cannot be inoculated by sub-epidermic 
puncture, but by subcutaneous; as a sub-epidermic inoculation, by 
bringing them nearer to the atmospheric air, places them in the 
best condition to prevent their development. The same reason 
explains why the virus is innocuous when applied to the open 
surface of granulating wounds, unless there may exist some part 
protected from the air where the microbe may find a spot favor¬ 
able to its cultivation. 
It is also because of the contained oxygen in the blood that it 
is not virulent, during life, in gangrenous animals. And the same 
reason explains the relative inocnousness of the virus into veins 
and the enormous doses which are necessary to kill even small 
animals. And finally, the action of the air is never favorable to 
the activity of filtrated serosities. 
In reference to the question of prophylaxy, immunity may be 
secured by the intra-venous injection of the veins. This is a 
method of which the author stands ready to prove the efficacy 
and certainty. 
PASSAGE OF THE PATHOGENIC MICROBES FROM THE MOTHER 
TO THE FCETUS. 
By M. Kotbassof. 
The author has made examinations of the organs of the foetus, 
in search of the bacterias with which the mother had been inocu¬ 
lated. Having hardened the tissues, he made sections, which he 
colored both by the simple and double method. Five observa¬ 
tions thus made have resulted in finding seventeen foetuses in 
which the liver, spleen, kidneys, heart and brain have always, and 
without exception, contained the bacillus of anthrax. Ordinarily 
the bacteridies were found outside the blood vessels, and ingroups 
of from three to nine little rods. More rarely they were found 
isolated. The bacteridies have also been observed, by cultures 
and microscopic examinations, in the placenta, in the ainniotic 
fluid, in the peritoneum and in other liquids of the foetal body. 
