CHAPTER TY. 
CLASSIFICATION OF BACTERIA. 
THE position occupied by the bacteria in the 
vegetable world is shown by the table on page qo. 
The Bacteria or Schizomycetes are classified into 
families according to their form, and again into 
genera according to certain other characters. The 
following classification is that proposed by Migula 
in his System der Bakterien, 1900: 
BACTERIA, SCHIZOMYCETES. 
EUBACTERIA, cells contain no sulphur granules 
or bacterio-purpurin. 
1. Family CoccacE#, spherical forms. 
Genus : 
1. Streptococcus, non-motile ; cells divide in one plane. 
2. Micrococcus, non-motile; cells divide in two planes. 
3. Sarcina, non-motile; cells divide in three 
planes. 
4. Planococcus, motile; cells divide in two planes. 
5. Planosarcina, motile; cells divide in three planes. 
2. Family BACTERIACE#, straight, rod-shaped 
forms without envelope. 
Genus: 
1. Bacterium, non-motile. 
2. Bacillus, motile ; flagella over whole surface. 
3. Pseudomonas, motile; flagella polar. 
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