I 3 2 



SCHIZOMYCETES 



Diplococci and Streptococci, where division takes 

 place in one plane only, and the individuals remain 

 attached (a) in pairs or (b) in chains. 



Tetrads, Merismopedia, or Pediococci, where divi- 

 sion takes place alternately in two planes at right 

 angles to each other, and the individuals remain at- 

 tached in flat tablets of four, or its multiples. 



Sarcince, where division takes place in three planes 



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FIG. 83. Types of bacteria cocci: i, Diagram of sphere indicating 

 planes of fission; 2, diplococci; 3, streptococci; 4, tetrads; 5, sarcinae; 6, 

 staphylococci. 



successively, and the individuals remain attached in 

 cubical packets of eight and its multiples. 



Micrococci or Staphylococci, where division takes place 

 in three planes, but with no definite sequence; conse- 



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FIG. 84. Types of bacteria bacilli, etc.: i, Bacilli; 2, diplobacilli; 3 

 streptobacilli; 4, spirilla; 5, vibrios; 6, spirochaetse. 



quently the individuals remain attached in pairs, short 

 chains, plates of four, cubical packets of eight, and 

 irregular masses containing numerous cocci. 



2. Bacilli (Fig. 84, i to 3) .Rod-shaped cells. A 

 bacillus, however short, can usually be distinguished 



