280 BA CTERIOLOG Y. 



Upon microscopic examination a micrococcus should 

 be found, but differing in its arrangement from the 

 staphylococci iust described. The single cells are not 



Fig. 56. 



^J* »• .Hr 







.^^ i .V 



/ 



Streptococcus pyogenes iu pus. 



scattered irregularly or arranged in clumps similar to 

 bunches of grapes, but are joined together in chains like 

 strands of beads. These strands are sometimes regular 

 in the arrangement and size of the individual cells com- 



FiG. 57. 



Streptococcus pyogenes. 



posing them, but more commonly certain irregular groups 

 may be seen in them. Here they appear as if two or 

 three cells had fused together to form a link, so to speak, 

 in the chain, that Is somewhat longer than the remaining 



