CONTAGIOUS DISEASES OF DOMESTICATED ANIMALS. 143 



not yet infected or which have been infected iu historic time that every 



exteii?>iou of this plague has been by contagion and by contagion alone. 



On motion of Wirz the following was adopted as the first resolution: 



1. From an anatomical point of view, at least in its relation to veterinary police, 

 every pneumonia (of cattle) wliicli is lobular and at the same time interlobular, and 

 the development of which does not depend on traumatic local causes, should be con- 

 sidered as epizootic contagions pleuro-pneumonia. 



The second resolution was modified by adding the word contagious, so 

 that it might read : 



2. From a physiological stand-point, epizootic contagious pleuro-pneumonia is spe. 

 cially characterized, in the liviug animal, by the contagious character and by the 

 symptoms of lobar-pneumonia. 



To the third resolution the following wording was given : 



3. There ought to be considered as — 



(a) Suspected of epizootic contagious pleuro-pneumonia every animal which in 

 an infected place manifests symptoms of fever or of disease of the chest. 



(b) Suspected of contamination every animal fouud iu an infected stable, or which 

 has been in one withiu three mouths, or which has been exposed to infection in any 

 other way. 



The fourth resolution was suppressed on motion of Lydtin and Wirz. 



B. — Prophylaxis. 



On motion of Zundel and Lydtin the congress decided to take up first 

 the question of stamping out. 



On motion of the same, Article 2 was modified and finally passed so as 

 to read as follows : 



2. Recognizing that from the point of view of sanitary police epizootic pleuro- 

 pueumouia propagates itself only by contagion, and is usually incurable and fatal, 

 this congress declares that animals atfected by the malady or suspected of it should 

 be sacrificed as quickly as ijossible. 



The third article was adopted with the single change of substituting 

 contaminated for suspected of contamination or very much exposed to 

 contagion, the word retaining the idea of exposed to contagion. It 

 read thus : 



3. Contaminated animals should be isolated or sacrificed. The slaughter of con- 

 taminated animals is especially indicated when the disease manifests itself very ex- 

 ceptionally or for the first time iu a stable belonging to a commune rich in cattle. 



On the question of the value of inoculation as a preventive, much 

 discussion ensued, the great majority, however, according to it the 

 power of protection to a certain extent. A number, however, of these 

 last, and especially those who like Berdez (Switzerland), Law (Xew 

 York), and others had had a favorable exiierience of stamping out, dep- 

 recattd inoculation iu any country where it was ])()ssible to promptly 

 extirpate the plague by the radical measures of slaughter and disinfec- 

 tion. Wirz reported that of the 182,308 cattle inoculated iu Holland, 

 in the past four years (1878-1882) the losses from the o[)eration had been 

 under 1 per cent., and the protection had been satisfactory. Law re- 

 peated the inoculation of 10 cattle with sterilized virus which obivatod 



