236 INFECTIVE DISEASES. 



Sternberg's Micrococcus. {Microbe de salive, Pasteur ; ^Hcro- 

 cvcciis I'asteuri, Sternberg ; Lancet-shaped micrococcus, TaLimon ; 

 Strejitococcus lanceolatus Pasteuri, Gamaleia ; Diplococcus pv^eu- 

 monice, Weichselbaum ; Bacillus septicus sputigenus, Flligge ; 

 Micrococcus of sputum sepiicamia, Frankel.) Bjjberical or (ival 

 cocci, siugl}-, in paii's or in chains, often lanceolate and capsuled 

 Stain readily with the aniline colours and by Gram's method ; 

 non-motile. They flourish in alkaline media in the inculsator. In 

 broth they produce in twelve houi's a cloudiness due to the develop- 





fc'^' ' 



^^W\ 







Flu. IKJ. — ^MicBOCOCCUS or Sputom Septic.emi.\. From the blood of a 

 Rabbit, x 1000 (Frankel .iXD Pfeiffer). 



ment of cocci and short chains. After a time these subside to 

 the bottora of the tube, and the liquid above becomes clear. In 

 plate-cultivations the colonies are small, cu-cular, white, and granular. 

 In the depth of gelatine, minute white colonies develop along the 

 track of the needle without hquefaction of the gelatine ; and on 

 the sloping surface of nutrient agar or blood serum minute trans- 

 parent drops appear along the line of inoculation. They grow in 

 milk, coagulating casein; but they do not grow on potato. Sub- 

 cultures quickly lose then- virulence, but regain it by inoculation. 



