THE LUNG PLAGUE. 63 



6. That four calves liad been seized with an articular affection. 



7. That contrary to Mr. Willems's observations, the insertion of the matter in the 

 tails of calves produced a local affection there. 



8. That finally, at the moment of dispatching that first report, M. Dele informed the 

 commission that a case of pleuro-pneumonia had just appeared at the Abbey of La 

 Trappe upon an inoculated cow. 



The favorable situation certified on the 15th of July has been maintained, with but 

 one exception, for the individuals of those herds which the proprietors stiU possess. 

 The articular affection observed in four cows has not occurred again ; therefore a sim- 

 ple coincidence must be admitted, and this casualty explained independent of inocu- 

 lation. 



The commission resolved on extending its operations, and this they 

 did by associating with themselves all the country veterinary practi- 

 tioners, in accordance with the organization of the civil veterinary ser- 

 vice in Belgium; and secondly, by undertaking a series of direct experi- 

 ments. 



The government on its part did not remain inactive. It organized local commissions 

 charo-ed with the supervision of the operations ; the losses occasioned by the inocula- 

 tion were assimilated to those of animals slaughtered on account of public benefit ; it 

 undertook to pay the difference between the estimated price and the selUng price of 

 the inoculated beasts, which, contracting exudative pleuro-pneumonia, should be sent by 

 their proprietors to the shambles, and of which the ofiflcers at the latter would make 

 declarations to the authorities. 



Further on M. Verheyen says : 



Wishing to free the inoculation from the numerous accessory questions which that 

 practice occasions, the commission adopted for its experiments, and submitted to the 

 minister of the interior for his sanction, this sim^ile programme : 



1. To purchase sound beasts ; to watch them dirrrng a certain time, in order to be 

 assured of the integrity of their pulmonary organs. 



2. To request M. Willems to inoculate them. 



3. Only to admit as preserved those in which that physician should have recognized 

 the specific inflammation caused by a productive inoculation, and which he should have 

 pronounced to be in the enjoyment of the immunity. 



4. To have the beasts cohabit with animals afilicted with exudative j)leuro-pneumo- 

 nia, at the same time placing some inoculated animals in identical conditions. 



A first batch of eight cows and heifers of Ardennes breed, selected in localities free 

 from exudative pleuro-iinenmouia, arrived at the veterinary school. M. Willems inoc- 

 ulated them on the 16th of August ; on the 11th of September, those numbered 1, 2, 3, 

 5, 6, and 8 were examined by M. Willems, who declared that the inoculation liad suc- 

 ceeded in those beasts. 



On the same day he inoculated eight other beasts purchased by M. Windelincx, on 

 account of the commission, at the fafr of Tirlemont. We cannot affirm that they were, 

 like the pr(!ceding, from a locality free from pleiu-o-pueumonia ; we gained, however, 

 by a rigorous and repeated examination, the certainty that the thoracic organs were 

 intact. At the same sitting, M. Willems reinoculated the two Ardennes cows num- 

 bered 4 and 7. 



All showing themselves still refractory on the 29th of September, M. Willems was 

 apprised of it; the letter was unanswered. 



On the 10th of October an ox — that marked No. 2 — of the herd that came fi-om Tirle- 

 mont, exhibited a swelling at the end of the tail. That portion of the caudal append- 

 age being seized with dry mortification, was eliminated. 



On the 18th October three members of the commission proceeded to a fresh inocu- 

 lation. They operated upon the Nos. 1, 3, 4, 5, 7, and 8, from Tiiiemont, and upon the 

 Aidennes cow No. 4. 



