EXERCISE 89. HOG CHOLERA GROUP. 



227 



Bacillus Salmonii (TREVISAN) CHESTER. 



SYNONYMS. Hog-cholera bacillus; B. suipestifer KRUSE; Bact. 

 cholera-suum LEHM. & NEUM. 



EXPLANATORY. First described by Klein, 1884, first cultivated 

 by Salmon and Smith in 1885. Occurs in blood, organs and intes- 

 tinal contents of hogs suffering from hog cholera. 



REFERENCES. Salmon and Smith, Kept. Bureau Anim. Ind., 

 1885-91 ; C. 210 ; H. 281 ; K. & W. Ill, 622 ; L. & N. 252 ; Mig. 2, 759 ; 

 McF. 538. 



MORPHOLOGICAL CHARACTERS : 



SKETCHES. 



1. FORM AND ARRANGEMENT: 



a. Bouillon 



6. Agar 



i 



c. Gelatin 



d. Other media 



2. SIZE: 



3. STAINING POWERS: 



a. Aqueous gentian- violet. . 



b. Loeffler's methylen-blue. 



c. 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 



