VIIl] 



MICROCOCCI 



145 



are that the cocci by repeated division form linear series, 

 thus producing shorter or longer chains, the latter more or 

 less twisted and wavy; when growing in fluid media at 

 37° C— broth, condensation fluid of solidified Agar, or 

 blood-serum— the chains are rapidly formed and attain great 

 length. On solid media— gelatine, Agar, blood-serum— the 



Fig. 33. — Film Specimen of Pus of Chronic Abscess. Pus Cells, amongst 

 THEM A Group of Streptococcus Pyogenes. 



chains are not so long, occasionally only composed of six or 

 eight cocci. Examining the long chains of fluid media, one 

 always notices an inequality in the size of the cocci, some- 

 times one or the other coccus — in the middle, or oftener at 

 the end of the chain -r being twice and thrice as big as the 

 average coccus ; in some chains, wholly or in part, the cocci 



L 



