370 
FOURTH INTERNATIONAL VETERINARY CONGRESS. 
inoculation, in its purely scientific aspect, but doubted the value 
of the measure in the practical sense. It is detrimental to com¬ 
merce ; it gives a false security concerning the animals operated 
upon. It may happen that animals already affected by latent 
pleuro-pneumonia may be considered as protected, and put again 
in circulation, under the false protection of inoculation. 
Mr. Grissonnanche insisted upon the importance of the use 
of disinfectants against contagions pleuro-pneumonia, and de¬ 
scribed in detail the process which has proved with him most 
successful. He prefered the use of disinfectants, especially of 
chlorine and its compounds, to inoculation, which he considered 
as useless, and often even injurious. 
Prof. Law would admit that inoculation of pleuro-pneumonia 
—which gives security against a second attack of the disease— 
had the same value as vaccination had to variola. But he believed 
that, as a measure of sanitary police, it contributed more to limit 
its propagation than to extinguish it; slaughter is a more radical 
measure, and more efficacious to completely destroy a center of 
infection. 
Inoculated animals take a specific disease analogous to pleuro¬ 
pneumonia itself, differing from it only as to its seat. The germs 
develop themselves to the point of introduction, an'd extend their 
effects upon the organism, without affecting it in any other way. 
He prepares lymph for inoculation by warming it at 140® to 
150° Fahrenheit. By using this precaution, he had succeeded in 
inserting the virus in a forbidden region (region defendue ) without 
producing local accident. After the inoculation a slightly 
marked reactive fever has shown itself, and a Complete immunity 
has been obtained, as proved by successive reinocculations with 
natural virus. 
The liquid of inoculation introduced into the circulatory appa¬ 
ratus remains without effect; the germs are destroyed by the 
morphological elements of the blood, in the connective tissues, 
where the cellular elements are rare, these same germs resist and 
multiply, giving rise to lesions anolagous to those that they pro¬ 
duce in the lung when they have penetrated into that organ. 
Mr. Leblanc opposed the proposition of Mr. Bouley, pre¬ 
sented yesterday: 
