EXERCISE 80. ANTHRAX GROUP. 



167 



Bacterium anthracis (KOCH) MIG. 



SYNONYMS. Bacillus anthracis KOCH ; anthrax bacillus. 



EXPLANATORY. First described by Robert Koch in 1876. Found 

 in the blood and tissue in cases of anthrax or splenic fever. 



REFERENCES. Koch, Cohn 's Beitraege zur Biologic der Pflanzen, 

 1876, 2, 277; Chester, Rept. Delaware Exp. Station, July, 1895; 

 A. 492 ; C. 190 ; Fl. 2, 217 ; H. 184 ; K. & W. II, 1 ; L. & K. 287 ; L. & 

 N. 307 ; Mig. 2, 280 ; M. & R. 300 ; M. & W. 156 ; McF. 469 ; P. 547 ; 

 S. 328. 



MORPHOLOGICAL CHARACTERS : 



SKETCHES. 



1. FORM AND ARRANGEMENT: 



a. Bouillon 



6. Agar 



c. Gelatin 



d. Other media 



2. SIZE: 



3. STAINING POWERS : 



a. Aqueous gentian- violet. . 



b. Loeffler's methylen-blue. 



r,. Gram's stain 



d. Special stains 



4. MOTILITY : 



a. Character of! movement.. 



b. Flagella stain 



5. SPORES: 



6. SPECIAL CHARACTERS : 



a. Capsules 



b. Involution forms 



c. Deposits or vacuoles 



d. Pleomorphism 



