212 
M. PASTEUR. 
animals had ever been buried, so as to prove that none will die 
from anthrax. This plot of ground will also be fenced and of 
the same dimension as the other. 
The President of the Society having expressed the desire that 
the experiments be made also upon cows, Mr. Pasteur answered 
that he was willing to test them, though the experiments of vac¬ 
cinations upon cows were not as advanced as those on sheep, and 
that it might be possible that the results would not be as positive. 
At any rate Mr. Pasteur proposed that ten cows be placed at his 
disposition, that six should be vaccinated at the same time as the 
sheep and four should remain unvaccinated—after the vaccination 
the ten cows will simultaneously be inoculated with very virulent 
virus. The six vaccinated cows will not be sick, the four unvacci¬ 
nated shall perish or at least shall all be very sick. With the 
dead cows the experiment of reproducing the contagion by the 
earth can be carried out as it was for the sheep. 
The experiments shall begin on the fifth of May and likely be 
terminated in the first part of June. * * * * 
Mr. Pasteur made the report of the above experiment as 
follows : 
“ The experiments began on the 5th of May, in the commune 
of Pouilly-le-Fort, on Mr. Rossignol’s farm. 
Upon request of the Agricultural Society two sheep were re¬ 
placed by two goats and as no condition of age, sex or breed had 
been proposed, the fifty-eight sheep were of different ages, sex 
and breed. The ten bovines were represented by eight cows, one 
ox and a bull. 
Upon the 5th of May, 1881, with a syringe of Pravaz, twen¬ 
ty-four sheep, one goat and six cows were inoculated with five 
drops of culture of attenuated virus. 
On the 17th they received another inoculation of another cul¬ 
ture, also attenuated, but more virulent than the first. 
On the 31st of May, an inoculation of very virulent virus was 
made, which was to decide as to the efficiency of the preventive 
made on the 5th and the 17th. To effect this, these thirty-one 
vaccinated and twenty-four sheep, one goat and four cows were 
inoculated. 
