THE MULTIPLIOATIOIS OF MICRO-ORGANISMS 225 



The results obtained with different waters have 

 been graphically brought together by Miquel in the 

 following diagrams, in which the abscissae represent 

 the duration of time, and the ordinates the number of 



Number of 

 Bacteria in 

 1 c.c, 



1,000,000 



900,000 



800,000 



700,000 



600,000 



500,000 



400,000 



300,000 



200,000 



100,000 



40 



50 



60 



Days. 

 Fig. 16. Multiplication of Bactebla. in Spking Waters. 

 (Miquel.) 



bacteria present in 1 c.c. All the samples were main- 

 tained at from 29° to 30° C. 



The above figure represents the behaviour of certain 

 spring-waters containing initially only a small number 



Q 



