PLATE VI. 



FIG. 1. Micrococci from bottom of culture-solution (rabbit- 

 bouillon) inoculated with blood of septicaemic rabbit, containing 

 the same micrococcus in active multiplication, as shown in Fig. 3. 

 Magnified 1000 diameters by Zeiss's $ in. horn. ol. im. objective. 

 Methyl -violet staining. 



FIG. 2. The same micrococcus cultivated in chicken-bouillon, 

 inoculated with human saliva. X 1000. Same objective and 

 staining. 



FIG. 3. The same micrococcus as found in the blood of a rab- 

 bit, inoculated with normal human saliva. (See p. 237.) X 1000 

 diameters; Zeiss's ^ in. objective. 



FIG. 4. Micrococci from culture-solution (chicken-bouillon) 

 inoculated with gonorrhceal pus. X 1000 diameters ; Zeiss's ^ in. 

 objective. Methyl-violet staining. 



FIG. 5. Micrococci from urine passed into a sterilized glass 

 vessel and allowed to stand five days, (covered with a watch-glass 

 and bell-glass; Lister's apparatus, Fig. 5, p. 176,) believed to be 

 identical with those shown in Fig. 4, and with Micrococcus urece, 

 Cohn. (See description on p. 75.) X 1000 diameters; Zeiss's 

 -% in. objective. Aniline brown staining. 



FIG. 6. Micrococci from culture-solution (malt-extract,) in- 

 oculated with normal human saliva, probably identical with the 

 preceding; showing multiplication in two directions. X 1000, by 

 Zeiss's ^ in. objective. Aniline brown staining. 



FIG. 7. Micrococcus urece, from alkaline urine, showing for- 

 mation of " chaplets," torula-chains, by division in one direc- 

 tion only. X 1000, by Zeiss's ^ in. objective. Aniline brown 

 staining. 



