DIPLOCOCCUS GROUP— Continued. 159 



Micrococcus Weichselbaumii (Thevisan). 

 Synonym. Diplococcus intracellularis meningitidis "Weichsel- 



BAUM. 



ExPLANATOEY. First described in 1887 by Weiehselbaum. It is 

 found in the meningeal exudate of certain cases of epidemic cerebro- 

 spinal meningitis and in nasal secretions in a number of cases. 



Eepebences. Weiehselbaum, Fortsehritte der Medicin, 1887; 

 Councilman, Kept. Mass. State B. of H. 1898 ; A. 298 ; C. 64 ; H. 170 ; 

 K. & W. Ill, 256 ; L. & N. 148 ; Mig. 2, 189 ; McF. 281 ; M. & R. 188 ; 

 P. 516 ; S. 310. 



Morphological characters : Sketches. 



1. Form and arrangement: 

 «. Bouillon 



b. Agar . 



c. Gelatin. 



d. Other media 



2. Size: 



3. Staining powers: 



ti. Aqueous gentian- violet. . 

 6. Loeffler'smethylen-blue. 



I . Gram's stain 



d. Special stains 



i. Motility: 



It. Character of movement. . . 

 6. Plagella stain 



5. Spores : 



6. Special oharaotees: 



a. Capsules 



6. Involution forms 



c. Deposits or vacuoles 



d. Pleomorphism 



