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DISTRIBUTION OF BACTERIA 



organisms are associated with putrefaction and decay, and 

 where these processes are actively going on enormous numbers 

 of bacteria are found (Fig. 57). 



FIG. 57. Colonies of soil bacteria. After Lipman. 



Quantitative Distribution of Bacteria in the Soil 



The number of bacteria in different soils is determined by 

 the character of the soil. In some soils they are compara- 

 tively few, in others the numbers are enormous. The num- 



