EXERCISE 90. TYPHOID GROUP. 



235 



Bacillus typhosus ZOPF. 



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

 ibdominalis 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. & R. 319 ; McF. 481 ; P. 402. 



MORPHOLOGICAL CHARACTERS : 



SKETCHES. 



T. FORM AND ARRANGEMENT: 



a. Bouillon 



b. Agar 



c. Gelatin 



d. Othermedia 



2. SIZE: 



3. STAINING POWERS: 



a. Aqueous gentian-violet. . 

 &. Loeffler's methylen-blue. 



c. Gram's stain 



d. Special stains 



I. MOTILITY : 



a. Character of movement.. 



b. Flagella stain 



5. SPORES: 



6. SPECIAL CHARACTERS: 



a. Capsules 



&. Involution forms 



c. Deposits or vacuoles 



d. Pleomorphism 



