Report on the Bacteriology of Water. 



531 



On comparing this table with the one on p. 520, which refers to the 

 same water, only without the addition of salt, it will be seen that the 

 effect of the salt addition was to cause an enormous and rapid multi- 

 plication of the water bacteria. The liquefying colonies underwent 

 great multiplication, but there was also an enormous increase in other 

 non-liquefying colonies of various kinds. 



Typhoid-infected Unsterilised Thames Water to which 1 per cent, of 

 Sodium Chloride was added on 12.2.1894. 



On comparing the above table with that on p. 521, it will be seen 

 what an enormous multiplication of the bacteria present was caused 

 by the addition of the salt ; in this case the multiplication was not so 

 much shared in by the liquefying organisms as by the others. 



Typhoid-infected Steam-sterilised Thames Water to which 1 per 

 cent, of Sodium Chloride was added on 12.2.1894. 



