26 



THE OEGANISM IS A MICEOCOCCUS. 



THEBE IS NO GEOWTH ON GELATINE AT THE 

 OEDINAEY TEMPEEATUEE. 



Micrococcus of gonorrhoea— Gonococcus (Neisser), from gonorrhceal 

 pus; biscuit-shaped cocci in pairs or groups of four, having 

 the flattened surfaces opposed, leaving a clear interspace, the 

 long diameter of a pair of cells being about 0'8 to 1'6 ij. ; stains 

 well by the aniline stains, but not by Gram. Methylene blue 

 and eosin form a good double stain ; the special characteristic 

 of the cocci is the fact that they are within the pus-cells ; can 

 best be cultivated on human blood serum at 84° C. 



Micrococcus of Kirchner, from bronchial secretion in epidemic in- 

 fluenza ; spherical cocci in pairs, surrounded by a capsule ; 

 does not stain by Gram. 



Micrococcus hsematodes, from the foul sweat of the axilla ; when 

 grown at 37° C. on the coagulated white of hen's eggs the 

 colonies appear of a blood-red colour. 



Diplococcus of acute pemphigus (Demme), from the bullae in cases 

 of acute pemphigus ; grown at 37° C. on agar, it forms round, 

 milk-white colonies with radiating processes. 



Diplococcus intercellularis meningitidis (Weichselbaum), from the 

 exudate in cases of cerebro- spinal meningitis ; cocci in pairs ; 

 fours or small groups formed in the ulterior of the pus-cells ; 

 do not stain by Gram. 



Micrococcus pyogenes tenuis (Eosenbaoh), from pus ; rather large 

 cocci, rarely arranged in masses ; the poles of the cells, when 

 staiued, appear to be separated by a clear interspace. 



Micrococcus tetragenus subflavus (von Besser), from nasal mucus ; 

 oval cocci, usually in tetrads; will not grow on gelatine at 

 ordinary temperature, but will on agar, forming dirty white 

 colonies with wrinkled margin. 



Micrococcus endocarditidis rugatus (Weichselbaum), from the 

 affected cardiac valves in a case of ulcerative endocarditis ; re- 

 sembles Staphylococcus pyogenes, but will not grow at ordinary 

 temperature ; at 37° C. on agar forms small brown wrinkled 

 colonies. 



