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Marine Microbiology 



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 MEMBRANE FILTER COUNTS \ BACTERIAL 

 COLONIES 10^ PER GRAM DRY WEIGHT 



Fig. 3. The comparative abundance of bacteria in marine sediments as 

 shown by membrane filter and fluorescence microscopy techniques, using 

 duplicate sediment samples. Trip means are indicated by solid points. 

 Results of averaging trip means by their logarithms are shown as open 

 figures. There appears to be no simple relationship between results of 



these two methods. 



