THE LUNG PLAGUE. 



55 



FOURTH GROUP OF OBSERVATIONS. 



Alarmed by the foregoing results, Dr. Willems determiued on attempt- 

 ing inoculation at the tip of the tail, as follows : 



Date. 



.Tune 19, 1851 



Material used. 



Pulmonary exudation from an animal in the 



first stage of disease. 

 Pulmonary exudation from an animal in the 



first stage of disease. 

 Pulmonary exudation from an animal in the 



first stage of disease. 

 Pulmonary exudation from an animal in the 



first stage of disease. 



Animals inoculated. 



Five lean Belgian buUocliS... 

 One Dutch bullock 



Seat of inocu- 

 lation. 



One calf two months old. 



One calf three months old 



Tip of tail. 



Tip of tail. 



Tip of tail. 



Tip of tail. 



On the 30th of June a slight swelling was observed in the parts inocu- 

 lated, with the exception of one bullock and two calves. The symptoms 

 of inflammation advanced, and on the 22d of July the tip of the tail of 

 four bullocks was completely gangrenous and detached. From that 

 moment the animals imjiroved. 



FIFTH GROUP OF- OBSERVATIONS. 



SIXTH GROUP OF OBSERVATIONS. 



On the 24th of July four showed swelling of the tail; on the 29th all 

 had the enlargement, and on the 10th of August Dr. Willems ampu- 

 tated the tail-tips of four. 



