VII.] 



MICROCOCCUS. 



75 



the accidental admixture of a capsulated micrococcus, which, 

 according to Dr. Sternberg of Baltimore, is probably identical 

 with the one occasionally present in the fluid of the mouth 

 even of healthy persons. Capsulated micrococci, identical 

 in morphological respects and mode of growth in artificial 



^-y "/Al'ifs^/^rlni 



/ A v \i '(^)^>/|\ /^S| 



FIG. 24. FROM A SECTION THROUGH THE HUMAN LUNG IN ACUTE CROUPOUS 

 PNEUMONIA. 



Three capillary vessels filled with blood are seen surrounding an alveolus which is 



filled with fibrin and blood corpuscles, amongst them chains of micrococci. 



Magnifying power 700. (Stained with gentian violet.) 



cultivations, occur in other conditions not connected with 

 croupous pneumonia. 



Bruylants and Verriers l assert that they have successfully 

 cultivated the micrococci of pleuro-pneumonia of cattle. 



1 Bull, de PAcad. Belg. 1880. 



