134 



MICRO-ORGANISMS IN WATER 



West Middlesex Waterworkst Barnes^ August 12, 1892 



TJnfiltered Water 



Unfiltered Thames "Water from Hampton . 1,437 



TJnfiltered Thames "Water which had only 



passed through one subsiding reservoir . 318 



Ditto, which had passed through two sub- 

 siding reservoirs ..... 177 



Thus in the experiments made at these works on 

 August 12, 1892, the unfiltered and filtered waters of 

 eight filter beds were submitted to examination. 



The number of bacteria in the unfiltered water 

 varied from 851 to 271, and averaged 482 in one cubic 



