DIPHTHERIA GEOUP— CoifTijr 



303 



Bacterium pseudodiphtheriticum (Loeffi-eii) Mig. 



Synonyms. Pseudodiphtheria bacillus of Loeffler ; xerose ba- 

 cillus of Neisser-Kuschbert. 



Explanatory. Isolated by Hoffman and others, from tho 

 healthy mouth and throat; by Neisser-Kuschbert and others from 

 xerosis and other affections of the conjunctiva. This may be only a 

 non-virulent variety of Bact. diphtheriae. 



References. A. 401 ; C. 355 ; H. 214 ; K. & W. II, 823 ; L. & N. 

 404 ; M\g. 2, 503 ; M. & R. 370. 



MORPPIOLOfilCAL CHARACTERS : 



1. Form and arrangement: 

 a. Bouillon 



Sketches. 



&. Agar . 



Gelatin 



d. Other media. , 



2. Size: 



3. Staining powers: 



(1. Aqueous gentian- violet. . 

 b- Loeffler's methylen-blue. 



t. Gram's stain 



d. Special stains 



1. Motility: 



a. Character of movement.., 



b. Flagella stain 



5. Spores: 



6. Special characters: — 



a. Capsules 



b. Involution forms 



u. Deposits or vacuoles.. 

 d, Pleomorphism 



