EXPERIMENTAL PATHOLOGY. 459 
1 have tried, by numerous experiments, to elucidate the 
question of the heredity of tuberculosis. Inoculations of por¬ 
tions of foetal organs or of still-born foetuses from well-marked 
tuberculous mothers were made on guinea-pigs, divided into 
series. Portions of placentas, crushed like the preceding, in 
sterilized salt water, 7 (per cent.), were also inoculated to 
other pigs; and in a third group of experiments inoculations 
with the sputa or portions of the organs of the tuberculous 
mothers were made similiarly to others. ' 
These experiments have given results uniformly negative 
to the assumption of the transmissibility of tuberculosis from 
mother to foetus. Indeed, while the guinea-pigs inoculated 
with the organs and sputa of tuberculous mothers died with 
tuberculosis, on the contrary the twenty-four guinea-pigs 
inoculated with the organs of children issued of tuberculous 
mothers and the eighteen treated with the portions of 
placenta remained healthy. 
In another series of experiments, I also tried to determine 
if, in a direct experiment upon animals, transmission from the 
mother to the foetus could be obtained. With this object, 
I innoculated five female guinea-pigs in the peritoneum with 
the bacillus of Koch; the livers and spleens of the eleven 
young ones issued from these females were inoculated to 
nineteen guinea-pigs, some of which are yet living; others 
were killed after five months and none of them presented 
the slightest indication of tuberculosis. 
From the above the author concludes that heredity of 
tuberculosis is far from being fatal or even frequent, but 
on the contrary seem to be extremely rar e.—Journ. Soc. 
Scient. 
RESISTANCE OF THE RA.BID VIRUS TO THE ACTION OF 
LONG-CONTINUED COLD. 
Mr. A. Chauveau has presented to the Academy of Medi¬ 
cine of Paris, in the name of Mr. Jobert, the report of the 
following experiment : 
“ A rabbit inoculated with rabies, of which it had died, is 
placed the same day in a cool chamber and submitted to cold 
