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Inoculation for Pleuro- Pneumonia in Cattle. 



" From the preceding facts," says the Report, "the Commission concludes: — 

 " That inoculation with the liquid extracted from a hepatized lung, the 



result of exudative Pleuro- pneumonia, is not a certain preservative against the 



malady. 



" That the phenomena succeeding inoculation may be produced several 

 times in the same animal, which may or may not have been attacked with 

 exudative Pleuro pneumonia. 



" That the two affections may exist together in the same individual, and 

 that considerable derangements are manifested in the inoculated part, whilst 

 the morbid action of the lungs progresses towards a fatal termination. 



"As to the ascertaining whether inoculation really possesses a preservative 

 power, and if so, in what proportion and for what length of time it imparts 

 immunity to the animals subjected to it, these are questions which can only be 

 solved by further experience. 



" Read and approved at a meeting of the Commission. Present — 



"M.Verhezen, President. 

 Bellefroid, Deuterluigne, 1 

 Gluge, Sauveur, I Members. 



Thets, Thiernesse, j 



Fallot, •» Delegates from the Royal 

 Marinus, J Academy of Medicine. 



" Brussels, Feb. 6, 1853." 



Having now shown that the present position of the question 

 of inoculation justifies our remark of its usefulness being as yet 

 a disputed point, we shall proceed to a detail of our own expe- 

 riments, and of the deductions drawn therefrom. Before doing 

 this, however, we must observe that there is a statement in the 

 Belgian Report, given on the authority of M. Willem's father, 

 which deeply affects our credit, and which consequently requires 

 a reply from us. Reserving, however, for the present any further 

 allusion ta this matter, we pass to the subject immediately re- 

 quiring attention. 



In the first place, we shall give a brief history of the progress 

 and rate of mortality of PI euro-pneumonia in the herd of cattle 

 among which our experiments have been instituted ; a step 

 rendered the more necessary in consequence of the effects which 

 have followed inoculation. Any means which are correctly used 

 to effect a proper solution of the question of inoculation cannot 

 fail to be of interest to the agriculturists and cattle proprietors of 

 this country, and the more so because here, as elsewhere, no 

 efficient method of cure of Pleuro-pneumonia has been discovered. 

 Hence we may remark, that the Royal Agricultural Society is 

 under peculiar obligations to those public-spirited individuals 

 who have shown their willingness to give up their cattle for 

 legitimate experiments. It is deeply to be regretted that, while 

 all persons are so ready to reap the benefit, so few can be 

 found to incur the risk of a scientific investigation. It is right, 

 therefore, to call attention to the fact named by Mr. Pusey, in 

 a note appended to the former Report, " that it was with the kind 



