I 



GENERAL REMARKS ON PROTECTIVE INOCULATION 

 FOR BOVINE PLEURO-PNEUMONIA. 



By Dr. Oscar Katz. 



Having been requested by a Member of this Society at its last 

 meeting to turn my attention to the movement that is going on in 

 Queensland, and I may add, to no less extent in this country, 

 as to the subject of protective inoculation for bovine pleuro- 

 pneumonia at large, and a satisfactory and practical modus of such 

 a procedure in particular, I have tried to put together in the 

 following lines a concise general review of what may be gathered 

 and followed from our knowledge about the subject in its present 

 state. 



Touching the history of the practice of inoculating cattle as a 

 preventive treatment against lung-plague, or, as it is more com- 

 monly called, pleuro-pneumonia, I may mention that it was first 

 introduced by Dr. Willems, of Hasselt (Belgium), as far back 

 as 1852. To my knowledge it represents the first case in which a 

 kind of vaccination was on a large scale applied to animals. Since 

 that time an almost universal attention has been and is still directed 

 to this specific prophylactic ; there is, in fact, every reason for 

 attempting to suppress and to get rid of this plague which at 

 the present day is met with more or less in every part of the globe, 

 and has involved and continues to involve most serious pecuniary 

 losses. For instance, since the supposed introduction of the disease 

 into Australia in 1858, the damage caused by its devastation and by 

 the measures employed for mastering it, amounts to something 

 enormous. Queensland alone which possesses about four million 



