BACTERIOLOGY AND WATER 117 



We are all of us sufficiently acquainted with the 

 first principles of germ life to realise how deftly 

 and how directly any inattention to hygienic 

 details is reflected in the larder or the store-room ; 

 and it requires but little stretch of the imagination 

 to picture the bacterial armaments which would 

 at once invade these peaceful waters on the first 

 suggestion of relaxed vigilance, or removal of that 

 rigid surveillance so essential for their protection 

 and preservation. 



