262 BACILLUS OF SYMPTOMATIC ANTHRAX 



17. How can pastures infected with the black-leg bacillus and its spores be 

 disinfected? 



18. Describe the first experiments in protective inoculation against "Rausch- 

 brand" infection. 



19. What are the dangers of the first method employed by Arloing, Cornevin, 

 and Thomas? 



20. What is Thomas' method of vaccination? 



21. What is Kitt's method? What is the method generally employed iii 

 the United States? 



22. Describe in detail the steps in the use of black-leg vaccine prepared by the 

 Bureau of Animal Industry. 



23. What kind of animals should be inoculated; what kind should not? 



24. Does the bacillus of symptomatic anthrax form a soluble toxin? how can 

 it be obtained? what are its properties? 



25. Can an immune serum against such a toxin be prepared? What are its 

 effects in the prevention and cure of the natural disease? 



