EDITORIAL. 
385 
already with more or less equivalent results, but with the differ¬ 
ence, in favor of the method of Arloing, that the inoculation of 
the cultures of pneumo-baciline were not followed by the same 
local results found by the inoculation of pulmonary serosity, as 
in Willems’ method. This experiment had also another object, 
\iz., that of showing the real value of the Willems’ method, 
whose efficacy was doubted by many and by the majority of the 
veteriniarians present at the Congress of Berne in 1895,—doubt 
which was expressed by a vote of the Congress, which con¬ 
demned inoculation as a means of fighting pleuro-pneumonia on 
a large scale, and which can be permitted as exception only in 
some localities, on account of peculiar circumstances, where 
general slaughter would be very difficult to apply. 
These experiments were begun on January 10th of this year. 
Forty cows were bought in a district free from the disease, and 
divided into three lots. The animals of one lot of thirteen 
were inoculated by the method of Arloing, those of another 
lot of thirteen also by that of Willems 5 fourteen animals were 
kept as witnesses. The animals of Arloing received two injec¬ 
tions twelve days apart, those of Willems only one, as is usual. 
On February 1st, thirty-eight days after the first inoculations 
made on both lots, the twenty-six animals were, with the 
fourteen witnesses, put in contact with one diseased animal, 
and later on with a second. This exposure lasted fourteen 
days. Without entering for the present into the minutiae of the 
experiments, which we may publish later on, let us give the 
results of the post-mortems made upon the forty animals 011 
the 10th of May : 
1st. Of the lot of the Willems cows, all were free from the 
disease. 
2d. Of the lot of the Arloing cows, nine showed lesions 
of pleuro-pneumonia. 
3d. Of the fourteen witnesses, ten showed also pleuro¬ 
pneumonia lesions. 
This experiment not only shows the crushing superiority of 
the Willems method over that of the cultures, but it has also 
