EXEECISE 80. ANTHRAX GROUP. 157 



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 Biologie der Pflanzen, 

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

 A. 492 ; C. 190 ; PI. 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 : 



1. Form and arrangement; 

 u. Bouillon 



Sketches. 



6. Agar . 



c. Gelatin. 



d. Other media.. 



2. Size: 



3. Staining powers : 



(I. Aqueous gentian-violet.. 

 1) Loeffler's methyl en-blue. 



I . Gram's stain 



d. Special stains 



4. Motility : 



CI. CharacteroE movement... 

 b. Plagella stain 



5. Spores: 



6. Special oharaoteks: — 



a. Capsules... 



6. Involution forms 



e. Deposits or vacuoles. . 

 tl. rieomorphism 



