EXERCISE 90. TYPHOID GROUP. 



235 



Bacillus typhosus Zopp. 



Synonyms. Typhoid bacillus; Eberth's bacillus ; Bacillus typhi 

 abdominalis Aut. 



Explanatory. First described by Eberth in 1880, first culti- 

 vated by Gaffky, 1884. It is found in the feces and urine of typhoid 

 patients. 



References. Eberth, Virchow's Archiv. 1880, 81, 58 and 1881, 

 83, 486 ; Gaffky, Mitth. aus dem Kaiserlichen Gesundheitsamte, 1884, 

 2, 372 ; A. 408 ; C. 213 ; H. 263 ; K. & W. II, 204, 166 ; L. & N. 232; 

 Mig. 727 ; M. & E. 319 ; McF. 481 ; P. 402. 



Morphological characters: 



Sketches. 



1. Form axd abkangement: 

 «. Bouillon 



6. Agar . 



Gelatin. 



d. Other media.. 



Size: 



Staining powbks : 



It. Aqueous gentian- violet. . 



6. Loeffler's methylen-blue. 



u. Grain's stain 



d. Special stains 



Motility : 



a. Character of movement... 



6. Plagella stain 



6. Spokes: 



6. Special chakacteks: 



a. Capsules 



6. Involution forms 



I. Deposits or vacuoles. 

 d. Pleomorphism 



