THE LUNG PLAGUE. 



57 



TENTH GROUP OF OBSERVATIONS. 



Two presented swelling ou tlie 12th of Februaiy, and recovered ; the 

 others showed no signs. 



ELEVENTH GROUP OF OBSERVATIONS. 



From the 13th to the 20th of March the effects of the inoculations were 

 developed. Only one animal of the first grouj) lost a little of its tail. 



Dr. Willems proceeded further. On the 19th of June, 1S51, he inoc- 

 ulated several cattle with the liquid expressed from healthy lungs with- 

 out j)roducing any effect. He then inoculated a bullock that had pre- 

 viously had the disease, and witnessed no results except a little enlarge- 

 ment at the seat of the puncture in one case. On the 28th of August, 

 1851, he reinoculated a bullock that had been operated on six or seven 

 months previously and had lost his tail; and did the same with two small 

 cows. 



On the 19th of January, 1852, he reinoculated three large bullocks, 

 and on the 26th of February three other bullocks, the whole of which 

 had. been successfully oi)erated on before. 



Fifty cattle that had not been inoculated were mixed in a stable with 

 those referred to, and with the following result : 



In the month of May, 1851, three bullocks sickened; on the 22d of 

 June a fourth case ; on the 2Gth a fifth ; on the 26th of July a seventh ; 

 and at different dates up to the lOtli of March, 1852, seventeen of the 

 new inoculated animals had suffered, and were sold for slaughter, Avhereas 

 the other thirty-three doubtless had a latent I'orni of the malady. 



The conclusions drawn by Dr. Willems were as follows: 



1. Pleuro-pneumonia is not contagious by inoculation of the blood or 

 other matters taken from diseased animals and placed upon healthy 

 ones. 



