QUESTIONS 449 



QUESTIONS. 



1. What is contagious pleuropneumonia in cattle? Where does the disease 

 occur? Has it ever been seen in the United States? 



2. Describe its pathologic lesions in the lungs. 



3. Describe its changes produced in the pleura. 



4. What is meant by a carneous lung? 



5. Which material contains the infectious virus? 



6. Describe the formation of necrotic pulmonary sequesters in the disease. 



7. Describe the histo-pathologic changes in the lungs and pleura. 



8. What is a pleuritis sicca? 



9. Describe the method of obtaining clear, uncontaminated virulent serous 

 fluid. 



10. What does microscopic examination of this fluid show? 



11. How can the organism of pleuropneumonia be cultivated? 



12. How do its cultures look in collodion sacs? How on Martin's gelatin-serum 

 medium? 



13. How is the latter prepared? 



-14. Under what conditions does the virus of pleuropneumonia pass a Cham- 

 berland filter? under what conditions does it not pass? 



15. Discuss protective inoculation against pleuropneumonia. 



16. What is Rinderpest? 



17. What kind of an organism causes it? 



18. Describe the most characteristic pathologic lesions of the disease. 



19. Describe the Kolle-Turner method of preparing a rinderpest immune 

 serum of high value. 



20. What method is used to have on hand large amounts of virulent blood? 



21. What are the curative properties of a high- value immune serum? What are 

 its properties as to stability? 



22. What is African horse-sickness due to? What are its most characteristic 

 pathologic lesions? 



23. What is hoof-and-mouth disease in cattle? 



24. How may the disease be spread by cowpox vaccine lymph ? 



25. What methods of protective inoculation have been practised? Discuss 

 their value. 



26. What is the cause of distemper in dogs? What are the most characteristic 

 anatomic lesions? 



27. What is the cause, what are the pathologic lesions of fowl plague? 



28. Describe the pathologic lesions of chicken-pox, or epithelioma contagiosum 

 avium? 



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