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PRINCIPLES OF SOIL MICROBIOLOGY 



The amount of energy thus liberated is only about 38 per cent of the 

 energy liberated in oxidation of lactic acid by free oxygen. 



Comparative amounts of energy liberated in microbiological processes. 

 The different nutrients develop the following number of calories as 

 listed here. The final products, when not C0 2 , are given in parenthesis. 



I. Oxidation by means of free oxygen (Kruse) 



