216 



TUBERCLE GROUP CONTINUED. 



Bacterium tuberculosis var. avium (KRUSE) MIG. 



SYNONYMS. Bacillus of fowl tuberculosis; Bacillus tuberculosis 

 avium KRUSE. 



EXPLANATORY. This organism was first separated from B. 

 tuberculosis by Maffucci, and is probably only a variety of the latter. 

 It is pathogenic for fowl, but ordinarily not for other animals. 



REFERENCES. Maffucci, Z. fur H., 1892, 11, 445 ; C. 356 ; K. & 

 W. II, 127 ; L. & N. 418 ; Mig. 2, 495. 



MORPHOLOGICAL CHARACTERS : 



SKETCHES. 



1. FORM AND ARRANGEMENT: 



a. Bouillon 



l>. Agar 



c. Gelatin 



d . Other media * 



2. SIZE: 



3. STAINING POWERS : 



a. Aqueous gentian- violet. . 

 6- Loeffler's methylen-blue. 



c. Gram's stain 



d. Special stains 



4. MOTILITY : 



a. Character of movement. . 

 6. Flagella stain 



5. SPORES : 



6. SPECIAL CHARACTERS : 



a. Capsules 



6. Involution forms 



c. Deposits or vacuoles 



d, PleomorDhism 



