PLATE I 



TYPES OF MICROORGANISMS PRODUCING DISEASES 

 IN ANIMALS. 



I. Bacillus anthracis, sporulating; pure culture on agar, stained with 

 fuchsin. The cause of anthrax in cattle and other domestic animals. 



II. Bacillus sarcophysematos bo vis, sporulating; pure culture on 

 glucose agar, stained with fuchsin. The cause of black-leg in cattle. 



III. Bacillus tetani, sporulating; pure culture in glucose bouillon, 

 stained with fuchsin. The cause of lockjaw in the horse. 



IV. Bacillus mallei, pure culture on glycerin agar ; stained with 

 methylene blue. The cause of glanders in the horse. 



V. Bacillus of tuberculosis from the gland of a hog. Stained with 

 carbol-fuchsin. 



VI. Spirillum or vibrio of Metchnikoff, from a pure culture on agar, 

 stained with fuchsin. The cause of vibrio cholera in the chicken. 



VII. Two halteridia infecting the red blood corpuscles of a bird. A 

 protozoan organism and the cause of avian malaria. 



VIII. A representative of the flagellate protozoan organism trypano- 

 soma. The cause of surra, nagana, etc., in horses, cattle, and other 

 domestic animals. 



