Inoculation for Pleuro- Pneumonia in Cattle. 



273 



ducing occasionally the death of the patient, will follow in- 

 oculation. 



5. That the sero-purulent matter, taken from an inoculated 

 sore, causes more speedy action than the serum obtained from a 

 diseased lung, and that " removes'^ cannot be effected on scientific 

 principles. 



6. That oxen are not only susceptible to the action of a second 

 but of repeated inoculations with the serous exudation of a diseased 

 lung. 



7. That an animal inoculated with the serous exudation is in no 

 icay -protected even from the repeated action of the sero-purulent 

 fluid w^hich is produced in the wound as a result of the operation. 



8. That animals not naturally the subjects of Pleuro-pneumonia, 

 such as donkeys, dogs, &c., are susceptible to the local action 

 both of the serous exudation from the lung and the sero-purulent 

 matter obtained from the inoculated wounds. 



9. That the serous fluid exuded from the lungs is not a specific 

 "virus," or " lymph," as it is sometimes designated. 



10. That inoculations made with medicinal irritating agents 

 will be follow^ed by similar phenomena to those observed in 

 inoculations wdth the exuded serum. 



11. That inoculation often acts as a simple issue, and that the 

 security which at times the operation apparently affords depends 

 in part upon this, but principally on the unknown causes which 

 regulate the outbreak, spread, and cessation of epidemic diseases. 



12. That inoculation of cattle, as advocated and practised by 

 Dr. Willems and others, is not founded on any known basis of 

 science or ascertained law, with regard to the propagation of 

 those diseases commonly called specific. 



13. That pleuro-pneumonia occurs at various periods of time, 

 after a so-called successful inoculation. 



14. And lastly, that the severity of Pleuro-pneumonia is in no 

 way mitigated by previous inoculation, the disease proving equally 

 rapid in its progress and fatal in its consequences in an inocu- 

 lated as in an zi/z-inoculated animal. 



James Be art Simon ds. 



June 1. 1853. 



VOL. XIV. 



T 



